Pre-Course Test Part 1

Simplify the expression: 7x - 3 + 2x + 8. Then evaluate the expression when x = 2.

• 5x + 5; 15

• 9x + 5; 23

• 9x - 11; 7

• 5x + 11; 21

Simplify the expression: 5(x - 4) - 7x + 9. Then evaluate the expression when x = 2.

• -2x - 11; -15

• 3x - 2; 4

• -2x - 9; -13

• -12x + 11; -13

Find the sum of the expressions: (3x + 4) + (-2x - 3).

• x + 1

• x + 7

• 5x + 1

• 5x - 7

Find the difference of the expressions: (6x - 1) - (x + 8).

• 4x - 7
• 5x - 9
• 5x + 9
• 7x - 9

Solve for x: x - 7 = -13.

• x = 6

• x = -6

• x = 20

• x = 0

• 11/30
• 7/15
• 5/12
• 9/20

Solve

15 - 3c = 3

• c = 5
• c = -1
• c = 2
• c = 4

Solve

-0.4a + 1.2 = 3.6

• a = -3
• a = -6

• a = 0
• a = 2

A pencil costs $0.30 and a pen costs $0.50. If you buy 10 pencils and the total cost is $7.50, how many pens did you buy?

• 10 pens

• 12 pens

• 9 pens

• 5 pens