____ 1. Simplify this expression . 27 + 75 - 12

A 6 3

B. 3 6

C. 10 3

D.4 3

____ 2. Which expression is a linear binomial? A. x^3 B. 3x + 3 C. 2x^2 + 3x - 1 D. 3x

____ 3. If x represents hotdogs, and y represents hamburgers, use the information in the following matrix to find out how much each hot dog or hamburger costs.

(4 2)(x)=13

(3 1)(y)=8.25

A. x = 1.25, y = 3.25 B. x = 1.50, y = 2.25 C. x = 2.00, y = 2.50 D. x = 1.75, y = 3.00

____ 4. Given these zeros, write a polynomial function in standard form x = 0, 2, 3. A. y = x^3 + 2x^2 - 3x + 6

B. y = x^3 + x^2 - 6x C. y = x^3 + 5x + 6 D. y = x^2 + x - 6

____ 5. Two hotels in a city are booked for a night. Matrix A shows the number of single and double rooms for each hotel. Matrix B shows the cost for each type of room. What is the product AB of these matrices? Rows are motel 1 and motel 2.Rows are single and double rooms. Columns are single and double rooms. Column is cost.

A=20 40 B=65

55 35 90

A.(6250)

(5750) B.(3900)

(8100) C.(4900)

. (6725) D.(4875)

(6750)

____ 6. Find the roots of this equation x^3 + 3x^2 + 5x + 15 = 0.

A.-3 I5

B.-3 5

C. 3, 5i D. 3, 5

____ 7. Write this expression in simplest from . A.2y^2/x^4 B.1/2x^4y^2 C.y^2/2x^4 D.2x64/y^2

____ 8. Find f -1 if f(x) = .x=9

A. f -1 = x^2 - 9; x 0 B. f -1 =x-9

C. f -1 = x - 9 D. f -1 = x^2 + 9

____ 9. Solve this equation 2c^3 - 7c^2 - 4c = 0.

A. 0, 1/2 , 4 B. 0, 1/2 , 4 C. 0, 2, 4 D. 1/2 , 4

____ 10. A combination lock has 40 numbers on it. How many different 3-digit lock combinations are possible if no digit can be repeated? A. 9880 ways B. 19,760 ways C. 59,280 ways D. 2,988,000 ways

____ 11. How many ways are there to choose five shirts out of seven to take to camp? A. 21 B. 35 C. 12 D. 2

____ 12. Simplify this expression . A. 6 B. 6 C. 12 D. 15

____ 13. Solve this equation and check for extraneous solutions . (1+8x)1/2-2=x A. x = 1, 3 B. x = 1, 3 C. x = -1, 3 D. x = 1, 3

____ 14. Find a fourth degree polynomial equation with rational coefficients that has roots 3 multiplicity of 2 and 1 - 2i. A. x^4 + 4x^3 + 2x^2 + 12x + 45

B. x^4 + 2x^3 + 6x^2 + 32x + 40

C. x^4 + 14x^2 + 32x + 17 D. x^4 + 4x^3 - 6x^2 - 36x - 27

____ 15. Find the range of this function . y=-1 -4x=20

4xA. all real numbers B. y 1 C. y 7 D. x 1