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Evaluate the expression for the given replacement values.

Question : Evaluate the expression for the given replacement values. : 2151603

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Evaluate the expression for the given replacement values.

1) 2 + 3x for x = 6

A) 5

B) 20

C) 16

D) 36

2) -y - z for y = -3 and z = 6

A) 3

B) -9

C) -3

D) 9

3) x - y + z for x = 23, y = 7, z = 2

A) 19

B) 18

C) 32

D) 14

4) x + 4z for x = 4 and z = -7

A) -3

B) -24

C) 32

D) 11

5) 5 + (4y - 2) for y = -5

A) -2

B) -13

C) -12

D) -17

6) x3 - 3y for x = 4 and y = -3

A) 55

B) 73

C) 3

D) 21

7) (6xz/20) for x = -4 and z = 5

A) 6

B) 24

C) 30

D) -6

8) (3x - 2/y) for x = 2 and y = -4

A) -2

B) -1

C) 8

D) 4

9) (20 + 4y/z) for y = -5 and z = 2

A) 2

B) - 20

C) 0

D) 20

10) (3x - y/2z) for x = -5, y = 4, and z = -2

A) - (19/4)

B) - (11/4)

C) (19/4)

D) (11/4)

11) (xy/z) + (5/12) for x = -4, y = -2, and z = 4

A) 2

B) (29/12)

C) - (29/12)

D) - 2

12) |x| - |z| - 8.9 for x = -4 and z = 4

A) 8.9

B) -16.9

C) -8.9

D) -0.9

Solve.

13) How much interest will $3000 in a savings account earn in 4 years at United Bank, which pays 8% simple interest: Use I = prt.

A) $96

B) $96,000

C) $960

D) $9600

14) A weather forecaster has predicted a high temperature of 7°C for tomorrow. Find this temperature in degrees Fahrenheit. Use F = (9/5)C + 32.

A) -28.1°F

B) 35.9°F

C) 44.6°F

D) -19.4°F

15) At a particular business it is required that the temperature be kept at 70°F, but the thermostat is calibrated in degrees Celsius. Find the temperature to be set in degrees Celsius. Use C = (5/9)(F - 32) and round to the nearest tenth of a degree if necessary.

A) 158° C

B) 22.2° C

C) 132.4° C

D) 21.1° C

16) Find the volume of a box that measures 2 inches by 5 inches by 8 inches. Use V = lwh.

A) 320 cu in.

B) 50 cu in.

C) 32 cu in.

D) 80 cu in.

17) Find the volume. Use V = lwh.

A) 137.6x cu cm

B) 309.6x cu cm

C) 665.64x cu cm

D) 324x cu cm

Simplify the expression by combining like terms.

18) 4x + 2x

A) 6 + x

B) 8x

C) 2x

D) 6x

19) 5b - 9b

A) -4b2

B) -4b

C) -14b

D) 4b

20) 2y - y - 9y

A) -8y

B) -6y

C) -7y - y

D) -7y

21) 5x - 10x - x

A) -5x - x

B) -5x

C) -6x

D) -4x

22) 9x - x - 5x + x

A) x2 + 4x

B) -x2 + 4x

C) 6x

D) 4x

23) 9b - 7b + 2

A) 2b + 2

B) 16b + 2

C) 4b

D) -2b + 2

24) 8a - 3a - a - 11

A) 5a - 11

B) 5a - a - 11

C) 4a - 11

D) 5a - 12

25) -1.8y - 6 - 7y + 1.8

A) 12.6y - 10.8

B) -13

C) -1.8y - 7y - 6 + 1.8

D) -8.8y - 4.2

26) 8x + 4 - 3x - 1

A) 11x + 3

B) 8

C) 8x

D) 5x + 3

27) -8y - 3x - 5x

A) -8y - 2x

B) -16xy

C) -8y - 8x

D) -8y + 2x

28) -6y + 5 - 1 + 3 + y - 7

A) -7y + 1

B) -7y

C) -5y - 1

D) -5y

29) 9x - 4 + 2x + x - 2

A) 12x - 6

B) 11x + 6

C) 10x - 6

D) 11x - 6

30) -7b - 2a - 3c + 3b - 9a

A) -4a - 11b - 3c

B) -11a - 4b

C) 7a - 4b - 3c

D) -11a - 4b - 3c

31) (1/3) + (5/6)y + (5/6) + (1/4)y

A) (7/6) + (13/12)y

B) (7/6) + (5/24)y

C) - (1/2) + (13/12)y

D) (1/6) + (5/24)y

32) -5a + 0.7 + 1.5b - 2a - 2 - 8b + 7a

A) -6.5b - 1.3

B) -5.8b - 2

C) -14a - 6.5b - 1.3

D) -7a + 9.5b - 1.3

Solution
5 (1 Ratings )

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