301 Weekly Test OC3 and OC4 Alg and num

Simplify the following expression:

8x - 2y + 4z + 5x -7z + 2y + 2z =

• 13x - z

• 3x + z

• 13x + z

• 13x + 4y + z

Simplify the following expression:

12 + 3(6x - 3) =

• 90x - 45

• 18x + 3

• 18x + 21

• 72x + 45

Express the following number in scientific notation:

360000

• (x - 3) (x - 1)

• (x - 3) (x + 1)

• (x + 3) (x - 1)

• (x + y) (x + y)

• 2x + 2y

• x = -9

• x = -4

• x = 11

• x = -7

Solve for x in the following equations:

3x + 4y = 29 and 8x - 2y =14

• x = 3 and y = 5

• x = 15 and y = 25

• x = 3 and y = 6

• x = 5 and y = 3