Linear Equations and Inequalities Posttest

Which equation has x=9 as a solution

• 4 + x = 12
• 5x = 45
• 2x = 20
• x + 7 = 26

Tags

CCSS.6.EE.B.5

What is the first step to solve this equation:
11 - 3x = 44

• Add 3 to both sides
• Subtract 11 from both sides
• Add 11 to both sides
• Divide 3 on both sides.

Tags

CCSS.7.EE.B.4A

4 = 2(x + 3)

• 1/2
• 7/2
• -1
• 5

Tags

CCSS.7.EE.B.4A

Sandy is upgrading her internet service. Comcast charges $60 for installation and $50.45 per month of service. AT&T has free installation but charges $57.95 per month. How many months would I have to have cable for to pay the same amount with both companies? Identify the equation that models this situation.

• 60x + 50.45 = 57.95
• 60x + 50.45 = 57.95x
• 60 + 50.45x = 57.95x
• 60x + 50.45x = 57.95x

Tags

CCSS.6.EE.B.6

CCSS.6.EE.B.7

CCSS.6.EE.C.9

x + 9 = 18 + -2x

• 5
• 2
• 3
• 4

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7

A twelve inch candle and an 18 inch candle are lit at 6pm. The 12 inch candle burns 0.5 inches every hour. The 18 inch candle burns two inches every hour. At what time will the two candles be the same height? Identify the equation that models this situation.

• 12 - 0.5x = 18 - 2x
• 12 + 0.5x = 18 + 2x
• 12x - 0.5 = 18x - 2
• 12 - 6x = 18 - 2x 

Tags

CCSS.8.EE.C.7B

-4x + 14 ≤ 54

• x ≥ - 10
• x ≤ -10
• x ≥ 10
• x ≤ 10

Tags

CCSS.7.EE.B.4B

Match:
You must be at least 48 inches tall to ride the bumper cars.
Let h be your height in inches.

• h < 48
• h > 48
• h ≤ 48
• h ≥ 48

Tags

CCSS.6.EE.B.8

-3 < x + 6 ≤ 5

• -9< x  or   x≤ -1
• All Real numbers
• -9< x   and   x≤ -1
• -10< x   and   x≤ -7

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.8

Which is a solution of
5(v + 3) - 10v > -10

• v < 5
• v > 5
• v > -5
• v < -5

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.8