GK Math Competency 3 and 4 Practice

Which of the following is the solution to the equation below?

-8 ( x + 5) = 2x + 20

• 6

• 4.8

• -3.2

• -1.5

Tags

CCSS.8.EE.C.7B

• 9

• -7

• 3.5

• -5

Tags

CCSS.8.EE.C.7B

• 0

• -5

• 4

• 1

Tags

CCSS.6.EE.B.5

• 14x - 2

Tags

CCSS.6.EE.A.4

A student argues that 2 (x + 4) - 8 (x + 3) = -5x + 4. Identify the first step that contains an error.

Step 1: 2 (x + 4) - 8 ( x + 3) = -6x + 4

Step 2: 2x + 4 - 8x - 24 = -6x + 4

Step 3: -6x + 4 - 24 = -6x + 4

Step 4: -6x - 20 = -6x + 4

• Step 1

• Step 2

• Step 3

• Step 4

Tags

CCSS.HSA.REI.A.1

A consumer makes a down payment of $220 and plans to pay $80 per month for phone service. If m is the number of months, which of the following equations represents, T, the total price paid?

• 220 = T + 80m

• T = 220m + 80

• T = 220 + 80m

• m = 220 + 80T

Tags

CCSS.6.EE.C.9

Does the following graph represent a function?

• Yes

• No

Which of the following relations represent a function?

• 
• 
• 
• 

Tags

CCSS.8.F.A.1

The equation for Line B is given by 2x + y = 5. Select the equation that could represent line A.

• y = x + 2

• y = -x + 2

• y = 2x + 5

• y = x + 5

Tags

CCSS.8.EE.C.8B

The children in the Anderson family are ages 2, 3, 4, 6, 6, 6, 7, 7, 9, and 10. What is the mean of the children's age?

• 7.5

• 6

• 5

• 8

Tags

CCSS.6.SP.B.5C