Create and Solve Equations

A cell phone company charges a $20 flat fee plus $0.05 for every minute used for calls. How many minutes can you talk if you spend $30?

Write an equation to represent the total cost.

• 0.05x + 20 = 30; 200 minutes

• 0.05x + 30 = 20; -200 minutes

• 30x + 0.05 = 20; 100 minutes

• 30x + 20 = 0.05; -100 minute

Tags

CCSS.7.EE.B.4A

Your car broke down, and the final bill was $359. The part that was replaced cost $99, and the charge for the mechanic’s labor is $65 per hour. Write an equation to model this situation, then solve the equation for the number of hours the mechanic worked on your car.

• 99x + 65 = 359; 3 hours

• 65x + 99 = 359; 4 hours

• 65x + 359 = 99; -4 hours

• 359x + 99 = 65; 8 hours

Tags

CCSS.7.EE.B.4A

It costs $12 to rent a bike and $2 per mile. Which equation models the total cost of renting a bike?

• x + y = 12

• y = 12x + 2

• y = 12x

• y = 2x + 12

Tags

CCSS.6.EE.C.9

Solve for b: bx - 5 = 9

• b = 14x

• b=14/x

• b = 14 - x

• b=x14

Tags

CCSS.HSA.CED.A.4

Solve for w: 2x + w = 10

• w = 8x

• w = 10 - 2x

• w = 10 + 2x

Tags

CCSS.6.EE.C.9

Solve for X:

4(x – 3) = 16 – 3x

• x = 28

• x = -28

• x = 4

• x = -4

Solve for X:

4x – 3 + 8x = 2(6x - 9)

• no solution

• x = 0

• x = 15

• many solutions

Tags

CCSS.8.EE.C.7A

Solve for x:

4 + 3x ≥ 16 + x

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• 
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Tags

CCSS.7.EE.B.4B

Use elimination method to solve

-4x - 2y = 12

4x + 8y = 24

• (6,-6)

• (-6,6)

• (18,6)

• (6,18)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6