Equations from a Word Problem

• c = 0.77s
• c = 1.59s
• c = 2.63s
• c = 2.79s

Choose the equation that best represents the problem.
Jenna had $240 to spend at the mall.  She bought 5 pairs of jeans that were equally priced.  How much did each pair of jeans cost if she had $10 left?

• 5x - 10 = 240

• 5x + 10 = 240

• 5 - 10x = 240

• 5 + 10x = 240

Walter lived 2 years longer than his brother Martin.  Walter was 79 at the time of his death.  Which equation could be used to find Martin's age, a, at the time of his death?

• a + 2 = 79

• 79 + 2 = a

• a - 2 = 79

• a - 79 = 2

A notebook costs $3.75 plus sales tax.  The sales tax rate is 6%.  Which equation represents the total cost of the notebook?

• 0.06 × 3.75

• 6 × 3.75

• 1.06 × 3.75

• 0.06 × 0.0375

Choose the equation that best represents the problem.

Angle A and Angle B are complementary.  The measure of Angle A is 3 degrees more than Angle B.  

• x + 3 = 90

• x + (x + 3) = 90

• x + 3 = 180

• x + (x + 3) = 180

On a trip, the Wonderful family drove at an average rate of 68 miles per hour.  Which equation can be used to find h, how many hours it took them to drive 612 miles?

• 612h = 68

• 68h=612

• h ÷ 68 = 612

• h ÷ 612= 68

Elise earns $400 a week working at the furniture store.  In addition, she earns 2% commission on all of her sales.  Last week, she sold $4,500 worth of furniture.  Which equation represents the amount of commission Elise earned last week?

• 400 × 0.02

• 4,500 × 0.02

• 4,900 × 0.02

• 400 + 4,500(0.02)

Choose the equation that best represents the problem. Jonathan is 15 years younger than three times Erin's age.  Jonathan is 27 years old.  How old is Erin?

• 3x + 15 = 27

• 3x - 27 = 15

• 3x - 15 = 27

• 3x + 27 = 15

Choose the equation that best represents the problem.

An HVAC technician charged an inspection fee of $125 plus $55 for ever hour of labor.  If Julie piad a total of $345, how many hours did her repair take the technician?

• 125x + 55 = 345

• 125 + 55x = 345

• 125x - 55 = 345

• 125 - 55x = 345

An HVAC technician charged an inspection fee of $125 plus $55 for ever hour of labor.  If Julie paid a total of $345, how many hours did her repair take the technician?

• 125x + 55 = 345

• 125 + 55x = 345

• 125x - 55 = 345

• 125 - 55x = 345