Question

Sarah needs to buy 3 identical shirts to wear to work. She has a $15 gift certificate. Including using the gift certificate, she can spend no more than $80. Which inequality can be used to determine the possible costs for a shirt?

a) 3s - 15 < 80
b) 3(s - 15) < 80
c) 3s - 15 > 80
d) 3(s - 15) > 80

Answer 1

The inequality that can be used to determine the possible costs for a shirt is 3s - 15 < 80.

Step-by-step explanation:

The inequality that can be used to determine the possible costs for a shirt is a) 3s - 15 < 80.

Let's break down the inequality:

1. 3s represents the cost of one shirt, since Sarah needs to buy 3 identical shirts.
2. -15 represents the $15 gift certificate that Sarah has.
3. 80 represents the maximum amount that Sarah can spend, including using the gift certificate.

By subtracting the value of the gift certificate from the total amount Sarah can spend and comparing it to the cost of one shirt, we can determine the possible costs for a shirt.