Linear Equations One Variable

The present age of Sahil’s mother is three times the present age of Sahil. After 5 years their ages will add to 66 years. Find their present ages.

• 14 , 40

• 14, 42

• 40, 12

• 50, 15

Tags

CCSS.8.EE.C.8C

Fifteen years from now Ravi’s age will be four times his present age. What is Ravi’s present age?

• 3 years

• 5 years

• 7 years

• 15 years

Tags

CCSS.8.EE.C.7B

A gym membership charges an initial fee of $100 plus a $25 fee every month. Another gym only charges $45 every month. After how many months will the total cost for both gyms be the same?

• 2

• 3

• 4

• 5

Mr. Smith works as a salesman at a car dealership. He is paid a base salary of $1,300 each month, and he receives a commission of $150 for each vehicle he sells. If last month Smith earned $2,500, how many cars did he sell last month?
[Hint: Write a linear equation to model this information.]

• 8

• 10

• 6

• 12

Tags

CCSS.7.EE.B.4A

Solve.
x - 10 = -6x + 4

• 6/5

• -6/5

• 2

• -2

If 7x + 3 = 24, what is the value of 5 - 4x ?

• -23

• -7

• 1

• 17

Tags

CCSS.7.EE.B.4A

5(n-2)=10(3n+9)

• -4

• 4

• 2.5

• 25

For the equation below to have one solution, which value cannot go in the blank:
___ + 12 = 8x + 4

• 8x

• 4x

• 0

• 9x

Tags

CCSS.8.EE.C.7A

3x - 4 = 5

• x = -3

• x = 9

• x = 1/3

• x = 3

Tags

CCSS.7.EE.B.4A

The Roaming Cell Phone Company charges $15.00 per month plus $0.20 per minute of airtime usage.  If Juanita uses x minutes of airtime, what is an equation that can be used to determine her monthly cell phone bill (C)?

• C = 15 + 0.20x

• C =15 (0.20x)

• C = 15 + x + 0.20

• C = 0.20 + 15x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2