Unit 1 Quiz #3

Which equation represents “the sum of six times a number and 15 is -42?”

• 6x + 15 = -42

• 6x - 15 = -42

• 6(x + 15) = -42

• 6(x - 15) = -42

Simplify 3(x - 3 + 2y)

• 3x - 3 + 2y

• 3x - 9 + 2y

• 3x - 9 + 6y

• 3x + 6y

Which inequality represents “ the sum of a number and 5 is less than 20?”

• x - 5 < 20

• x + 5 < 20

• x + 5 > 20

• x - 5 > 20

Which answer describes the expression 8x + y correctly?

• Coefficient is y. Variable is x. Term is 8x.

• Coefficient is x. Variable is 8. Term is y.

• Coefficient is 1. Variable is 8. Term is 8x.

• Coefficient is 8. Variable is x. Term is y.

Which equation represents 3x - 6y = 24 when solving for y.

• y = 0.5x - 4

• y = 2x - 4

• y = 2x + 4

• y = 0.5x + 4

Solve the equation 4(x + 3) = 44.

• 8

• 14

• 37

• -13

4x - 10 ≤ 22

• x ≤ 8
• x ≥ 8
• x ≤ 3
• x ≥ 3

Tags

CCSS.7.EE.B.4B

Write an inequality:
Twenty-two more than four times a number is less than 82.

• 22 + 4n ≤ 82
• 22 + 4n > 82
• 82 + 22n ≥ 4
• 22 + 4n < 82

Tags

CCSS.7.EE.B.4B

Bob has $150 in his savings account and saves $40 per month. Which equation represents the amount Bob has in his account after x months?

• y = 40 - 150x

• y = 40x + 150

• y = 150x + 40

• y = 150 - 40x

Simplify the following expression:
-6x + 4(-x - 3)

• -2x - 12
• 10x + 12
• -10x - 12
• -2x + 12

Tags

CCSS.6.EE.A.3