Midterm

1. Solve for x: 2x + 6 = 4(x – 5)

• 10

• 9

• 13

• 2

1. Which is irrational?
a. 2.3
b. -4

C.  $\sqrt{3}$  
D.   $\frac{2}{3}$  

• A

• B

• C

• D

1. If k(x) = 3x² - 4, then k(9) is

• 195

• 243

• 12

• 231

Find the product of (-2xy²)(3x²)

• -6xy

• x²y

• -6x²y²

• -6x³y²

5. Given: 3(2x² – 3) = 10x² – x

Step 1: 6x² – 9 = 10x² – x

What property is being done in step one?

• Distributive Property

• Associative Property

• Commutative Property

• Inverse Property

Find the sum of 9n² – 3n + 5 and -2n² – 6n - 8

• 11n² - 9n + 13

• 7n² -9n - 13

• 11n² - 9n - 3

• 7n² -9n - 3

9. Tim is given a rectangular piece of paper. If the length of Fred’s piece of paper is represented by 3x – 2 and the width is represented by 2x – 4. Find the area.

• 6x² - 12x + 4

• 6x² - 10x - 5

• 6x² -16x + 8

• 6x² - 4x - 4

9. Solve: 3(x² – 2) – (x² – 6x + 10)

• 2x² - 6x - 10

• 2x² + 6x - 18

• 2x² + 6x -16

• 2x² - 8x - 10

14.Which ordered pair is the solution to this system of equations?

y = 2x + 6

x + y = 3

a. (1, 2)

b. (2,3)

c. (-1, 4)

d. (1, 6)

• A

• B

• C

• D