Equations and Word Problems

Mary earns $14 per hour. Which equation represents how many hours she worked to earn $112? 

• 14h = 112
• 14 / h = 112
• h + 14 = 112
• h - 14 = 112

Tags

CCSS.HSA.CED.A.3

Lisa is cooking muffins. The recipe calls for 7 cups of sugar total. She has already put in 2 cups. How many more cups does she need to put in? 

• 7 - n = 2
• 2 - n = 7
• 2 + n = 7
• 7 + n = 2

Tags

CCSS.HSA.CED.A.3

At Joe's Clown Car Rental Agency, renting a car costs $35 plus $0.75 for every mile it is driven. 

• y = x(35 + 0.75)
• y = 35x + 0.75
• y = 0.75x + 35
• y = 0.75(x + 35)

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

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 = 0.20x + 15
• C =15 (0.20x)
• C = 15 + x + 0.20
• C = 0.20 + 15x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Write an expression for the following. Jerry has $20 and makes $7 per hour.

• y = 7x + 20
• y = 7 + 20x
• y = 20 + 7
• y = 20x + 7x

Tags

CCSS.6.EE.C.9

3c + 5 = 23

• c = 3
• c = 6
• c = 7
• c = 18

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.

15 = 2a + 7

• 2
• 4
• 12
• 14

Tags

CCSS.7.EE.B.4A

Solve for w:
-6w + 1 = -11

• 2
• 1.2
• 12
• -2

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