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B) The mild temperature was lowered by a heavy rain in the morning, and the temperature dropped lower by evening. 7 страница

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(A) 6

(B) 7

(C) 8

(D) 15

(E) 30

 

13. If a, b, and c are positive even integers such that a < b < c and a + b + c = 60, then the greatest possible value of c is

 

(A) 36

(B) 40

(C) 42

(D) 54

(E) 57

 

14. The population of Bumpton increased by 10% from 1980 to 1990 and decreased by 10% from 1990 to 2000. What is the net percent change in the population of Bumpton from 1980 to 2000?

 

(A) – 9%

(B) – 1%

(C) + 0%

(D) + 1%

(E) + 9%

 

15. Several values of the function f are shown below. The function g is defined by g (x) = 2 f (x) − 1. What is the value of g (3)?

 

(A) - 21

(B) - 13

(C) 3

(D) 11

(E) 21

 

16. If x > 0 and x = 5 y, then =

 

(A) 2 y

(B) y

(C) 4 y

(D) 16 y

(E) 24 y

 

17. If x > x 2, which of the following must be true?

I. x < 1

II. x > 0

III. x 2 > 1

 

(A) I only

(B) II only

(C) I and II only

(D) I and III only

(E) I, II, and III

 

18. Which of the following represents the distance from the midpoint of to the midpoint of on the number line below?

 

(A)

(B) 2 x - 1

(C) 2 x + 3

(D) 3 x + 1

(E) 4 x

 

19. P is the center of the circle below and PQ = QR. If Δ PQR has an area of 9 , what is the area of the shaded region?

 

(A) 36 - 9

(B) 24 - 9

(C) 18 - 9

(D) 9 - 9

(E) 6 - 9

 

20. In a class of 160 seniors, the ratio of boys to girls is 3 to 5. In the junior class, the ratio of boys to girls is 3 to 2. When the two classes are combined, the ratio of boys to girls is 1 to 1. How many students are in the junior class?

 

(A) 400

(B) 360

(C) 200

(D) 180

(E) 160

 

21. If 2 x = 10 and 3 y = 12, then 4 x + 6 y =

 

(A) 10

(B) 12

(C) 22

(D) 32

(E) 44

 

22. The average (arithmetic mean) of three numbers is 5. If one of the numbers is 4, what is the sum of the other two numbers?

 

(A) 8

(B) 9

(C) 10

(D) 11

(E) 12

 

23. The figure below shows a rectangle intersected by a line. If b = 2 a, then d + e + g + h =

 

(A) 120

(B) 240

(C) 300

(D) 320

(E) 360

 

24. For all real numbers x where x ≥ 1, let f (x) = . What is the value of f (100)?

 

(A) 3

(B) 9

(C) 10

(D) 27

(E) 100

 

25. If 3k+m = 243 and 2m = 8, then what is the value of 2k?

 

(A) 2

(B) 4

(C) 6

(D) 8

(E) 10

 

26. If b varies inversely as the square of c, and if b = 8 when c = 3, then what could be the value of c when b = 2?

 

(A) 2

(B) 5

(C) 6

(D) 25

(E) 36

 

27. In a certain soccer league, each of the five teams plays every other team in the league exactly three times each season. How many games are played in total in one season?

 

(A) 15

(B) 24

(C) 30

(D) 60

(E) 120

 

28. Pump A, working alone, can fill a tank in 3 hours, and pump B can fill the same tank in 2 hours. If the tank is empty to start and pump A is switched on for one hour, after which pump B is also switched on and the two works together, how many minutes will pump B have been working by the time the pool is filled?

 

(A) 48

(B) 50

(C) 54

(D) 60

(E) 64

 

29. Find the second order derivatives of the function

 

(A)

(B)

(C)

(D)

(E)

 

30. Find the integral of the function in the below.

 

(A)

(B)

(C)

(D)

(E)

 

 

TEST 17

 

 

1. If n is 3 times an even number, then which of the following could be n?

 

(A) 14

(B) 15

(C) 16

(D) 17

(E) 18

 

2. A machine can produce 50 computer chips in 2 hours. At this rate, how many computer chips can the machine produce in 7 hours?

 

(A) 175

(B) 200

(C) 225

(D) 250

(E) 275

 

3. In the figure below, what is the value of x?

 

(A) 40

(B) 45

(C) 60

(D) 75

(E) 90

 

4. Any positive integer that is divisible by 6 and 15 must also be divisible by

 

(A) 12

(B) 21

(C) 30

(D) 72

(E) 90

 

5. If n percent of 20 is 4, what is n?

 

(A) 0.2

(B) 2

(C) 5

(D) 20

(E) 500

 

6. If f (x) = 3 x + n, where n is a constant, and f (2) = 0, then f (0) =

 

(A) - 6

(B) - 2

(C) 0

(D) 2

(E) 6

 

7. A square has the same area as a right triangle with sides of lengths 6, 8, and 10. What is the length of one side of the square?

 

(A) 4

(B) 2

(C)

(D) 2

(E) 12

 

8. If 12 v = 3 w and v ≠ 0, then which of the following is equivalent to 2 w − 8 v?

 

(A) 0

(B) 4 w

(C) - 6 w

(D) 2 v

(E) – 2 v

 

9. If x is a negative number and 2| x | + 1 > 5, then which of the following must be true?

 

(A) x < - 3

(B) x < - 2.5

(C) x < - 2

(D) x > - 2

(E) x > - 5

 

10. If x = −2, then − x 2 − 8 x − 5 =

 

(A) 3

(B) 7

(C) 15

(D) 23

(E) 25

 

11. If , then what is the smallest possible positive value of m?

 

(A) 6

(B) 6.5

(C) 7

(D) 7.5

(E) 8

 

12. Theo wants to buy a sweater that is priced at $60.00 before tax. The store charges a 6% sales tax on all purchases. If he gives the cashier $70.00 for the sweater, how much should he receive in change?

 

(A) $3.60

(B) $6.40

(C) $7.40

(D) $9.40

(E) $66.40

 

13. When m is subtracted from n, the result is r. Which of the following expresses the result when 2 m is added to s?

 

(A) s + 2 n − 2 r

(B) s + 2 n + 2 r

(C) 2 s + 2 n − 2 r

(D) 2 s + 2 n + 2 r

(E) s − 2 n + 2 r

 

14. In the figure below, the slope of line l is and the area of the triangle is 48 square units. What is the value of x + y?

 

(A) 13

(B) 14

(C) 19

(D) 22

(E) 96

 

15. Ellen takes a trip that is y miles long in total, where y > 20. She travels the first 15 miles at an average speed of 30 miles per hour and the rest of the trip at an average speed of 40 miles per hour. Which of the following represents the total time of the trip, in hours?

 

(A)

(B)

(C)

(D)

(E)

 

16. If y varies directly as m and inversely as the square of n, and if y = 8 when m = 16 and n = 1, then what is the value of y when m = 8 and n = 4?

 

(A) 0.125

(B) 0.25

(C) 0.5

(D) 1

(E) 2

 

17. If a + b = s and a − b = t, then which of the following expresses the value of ab in terms of s and t?

 

(A) st

(B)

(C)

(D)

(E)

 

18. If y = m 4 = n 3 and y is greater than 1, then mn =

 

(A)

(B)

(C)

(D) y 7

(E) y 12

 

19. In the figure below, if AB = 6 and BC = 12, what is the area of the shaded region?

 

(A) 20

(B) 22

(C) 24

(D) 26

(E) 28

 

20. Every car at a certain dealership is either a convertible, a sedan, or both. If one-fifth of the convertibles are also sedans and one-third of the sedans are also convertibles, which of the following could be the total number of cars at the dealership?

 

(A) 28

(B) 29

(C) 30

(D) 31

(E) 32

 

21. A square has a perimeter of 36 centimeters. What is its area in square centimeters?

 

(A) 24

(B) 36

(C) 49

(D) 64

(E) 81

 

22. If b is a positive integer less than 100, then how many integer pairs (a, b) satisfy the equation ?

 

(A) 7

(B) 8

(C) 9

(D) 10

(E) 11

 

23. According to the table below, how much will it cost, in dollars, to clean each bathroom twice and each office once in the McKenzie Office Building?

 

(A) 200

(B) 400

(C) 450

(D) 600

(E) 850

 

24. If a 2b 2 = 10 and ab = 2, what is the value of a + b?

 

(A) 5

(B) 6

(C) 7

(D) 8

(E) 9

 

25. For all integers n greater than 1, let f (n) = k, where k is the sum of all the prime factors of n. What is the value of f (14) − f (6)?

 

(A) 4

(B) 5

(C) 6

(D) 9

(E) 14

 

26. The average (arithmetic mean) of four different positive integers is 20. What is the greatest possible value of any of these integers?

 

(A) 68

(B) 70

(C) 70

(D) 74

(E) 77

 

27. The radius of circle A is twice the radius of circle B. If the sum of their circumferences is 36 π, then what is the radius of circle A?

 

(A) 9

(B) 12

(C) 14

(D) 16

(E) 18

 

28. The figure below shows a cube. How many different planes can be drawn such that each contains exactly two edges of the cube?

 

(A) 4

(B) 5

(C) 6

(D) 7

(E) 8

 

29. Find the second order derivatives of the function

 

(A)

(B)

(C)

(D)

(E)

 

30. Find the integral of the function in the below.

 

(A)

(B)

(C)

(D)

(E)

 

 

TEST 18

 

 

1. If (x + 4) + 7 = 14, what is the value of x?

 

(A) 3

(B) 7

(C) 11

(D) 17

(E) 25

 

2. Erica spends $0.95 each day for her newspaper subscriptions. She would like to determine the approximate amount she spends during the month of July, which has 31 days. Which of the following would provide her with the best estimate?

 

(A) $0.50 30

(B) $1.00 30

(C) $1.50 30

(D) $0.50 35

(E) $1.00 35

 

3. In the figure below, lines l, m, and n intersect in a single point. What is the value of w + x?

 

(A) 40

(B) 70

(C) 90

(D) 130

(E) 140

 

4. Let the function g be defined by the equation g (x) = 3 x + 4. What is the value of g (5)?

 

(A) 8

(B) 11

(C) 15

(D) 19

(E) 23

 

5. If x > y, which of the following equations expresses the fact that when the difference between x and y is multiplied by their sum, the product is 18?

 

(A) (x – y)2 = 18

(B) (x + y)2 = 18

(C) (xy) (x + y) = 18

(D) x 2 – y 2 = 18

(E) x 2 + y 2 = 18

 

6. If 3 - 7 = 20, what is the value of x?

 

(A) 3

(B) 9

(C) 27

(D) 36

(E) 81

 

7. Chris buys a chocolate bar and a pack of gum for $1.75. If the chocolate bar costs $.25 more than the pack of gum, how much does the pack of gum cost?

 

(A) $0.25

(B) $0.50

(C) $0.75

(D) $1.00

(E) $1.50

 

8. 40% of 80 is what percent of 96?

 

(A) 20%

(B) 30%

(C) 331/3

(D) 50%

(E) 662/3%

 

9. If l, m, and n are positive integers greater than 1, lm = 21, and mn = 39, then which of the following must be true?

 

(A) n > l > m

(B) m > n > l

(C) m > l > n

(D) l > n > m

(E) n > m > l

 

10. According to the graph below, ABC Company showed the greatest change in profits between which 2 years?

 

(A) 1996 and 1997

(B) 1997 and 1998

(C) 1998 and 1999

(D) 1999 and 2000

(E) 2000 and 2001

 

11. In a 9th-grade class, 12 students play soccer, 7 students play tennis, and 9 students play lacrosse. If 4 students play exactly two of the three sports and all other students play only one, how many students are in the class?

 

(A) 28

(B) 24

(C) 20

(D) 18

(E) 16

 

12. The point (14, 14) is the center of a circle, and (2, 9) is a point on the circle. What is the length of the diameter of the circle?

 

(A) 24

(B) 26

(C) 50

(D) 144

(E) 169

 

13. The population of Boomtown doubles every 18 months. In January of 2000, its population was exactly 12,000. At this rate, approximately when should the population reach 96,000?

 

(A) January 2003

(B) July 2004

(C) January 2006

(D) July 2007

(E) January 2012

 

14. In how many different ways can five students of different heights be arranged in a line if the tallest student cannot be on either end?

 

(A) 24

(B) 25

(C) 72

(D) 96

(E) 120

 

15. In the figure below, a > 90 and b = c + 3. If a, b, and c are all integers, what is the greatest possible value of b?

 

(A) 43

(B) 46

(C) 60

(D) 86

(E) 89

 

16. In the figure below, Δ ACF is equilateral, with sides of length 4. If B, D, and E are the midpoints of their respective sides, what is the sum of the areas of the shaded regions?

 

(A) 3

(B) 3

(C) 4

(D) 4

(E) 6

 

17. Given the graph of y = f (x) below, which of the following sets represents all values of x for which f (x) ≥ 1?

 

(A) all real numbers

(B) x ≥ 1

(C) −5 ≤ x ≤−1; 1 ≤ x ≤ 5

(D) −4 ≤ x ≤ −2; 2 ≤ x ≤ 4

(E) x ≤ −4; x ≥ 4

 

18. If a is a number chosen randomly from set X and b is a number chosen randomly from set Y, what is the probability that ab is greater than 20 but less than 50?

 

(A)

(B)

(C)

(D)

(E)

 

19. If w a × w 5 = w 15 and (w 4)b = w 12, what is the value of a + b?

 

(A) 6

(B) 7

(C) 11

(D) 12

(E) 13

 

20. Given the graph of y = f (x) below, which of the following represents the graph of y = f (x − 2)?

 

(A)

(B)

(C)

(D)

(E)

 

21. In the figure below, what is the value of 2 x?

 

(A) 36

(B) 72

(C) 90

(D) 108

(E) 132

 

22. If (x − 4)2 = 36, then x could be

 

(A) - 6

(B) - 2

(C) 0

(D) 4

(E) 6

 

23. In the figure below, what is the value of a + b + c + d?

 

(A) 56

(B) 128

(C) 256

(D) 264

(E) 322

 

24. If f (x) = x 2 − 4, for what positive value of x does f (x) = 32?

 

(A) 5

(B) 6

(C) 7

(D) 8

(E) 9

 

25. A can of mixed nuts contains cashews, almonds, peanuts, and walnuts in the ratio of 2 to 4 to 5 to 7, respectively, by weight. What fraction of the mixture by weight is almonds?

 

(A)

(B)

(C)

(D)

(E)

 

26. Twenty students in a chemistry class took a test on which the overall average score was 75. If the average score for 12 of those students was 83, what was the average score for the remaining members of the class?

 

(A) 60

(B) 61

(C) 62

(D) 63

(E) 64

 

27. If Anthony had 3 times as many marbles as he actually has, he would have as many marbles as Billy has. What is the ratio of the number of marbles Anthony has to the number of marbles Billy has?


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Читайте в этой же книге: D) I and III only | B) The mild temperature was lowered by a heavy rain in the morning, and the temperature dropped lower by evening. 1 страница | B) The mild temperature was lowered by a heavy rain in the morning, and the temperature dropped lower by evening. 2 страница | B) The mild temperature was lowered by a heavy rain in the morning, and the temperature dropped lower by evening. 3 страница | B) The mild temperature was lowered by a heavy rain in the morning, and the temperature dropped lower by evening. 4 страница | B) The mild temperature was lowered by a heavy rain in the morning, and the temperature dropped lower by evening. 5 страница | B) The mild temperature was lowered by a heavy rain in the morning, and the temperature dropped lower by evening. 9 страница | B) The mild temperature was lowered by a heavy rain in the morning, and the temperature dropped lower by evening. 10 страница | B) The mild temperature was lowered by a heavy rain in the morning, and the temperature dropped lower by evening. 11 страница | B) The mild temperature was lowered by a heavy rain in the morning, and the temperature dropped lower by evening. 12 страница |
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