Cammie is shopping at a department store and has $60 in her purse. She has a 10% off coupon that she is planning to use. However, the coupon states that her total purchase after the discount and tax must be greater than $20. Which inequality graph illustrates how much she can spend?

How would you write this equation?

Question

Jaquan Watkins

Mathematics

2 October, 16:15

Cammie is shopping at a department store and has $60 in her purse. She has a 10% off coupon that she is planning to use. However, the coupon states that her total purchase after the discount and tax must be greater than $20. Which inequality graph illustrates how much she can spend?

How would you write this equation?

+1

Answers (1)

Know the Answer?

Ryan Brennan · Answer 1

Since she has $60 in her purse, that is the maximum amount she can spend. If we let x be the amount she spends, the 10% discount will give her 0.10x as discount. The inequality that best represent the scenario above would be,

20 ≤ x - 0.10x

or

10 ≤ 0.90x