Question

Robbie received a gift card for $20. He bought a cookie for $2.39 and 4 coffees. He still has some money left on the gift card. Which inequality could help you solve for c, the cost of each coffee in dollars?

Answer 1

$4.40

Explanation:

To find the cost of each coffee in dollars, you can use the inequality:

2.39 + 4c < 20

This inequality states that the total cost of the cookie and the four coffees is less than $20.

To solve for c, the cost of each coffee in dollars, you can start by combining like terms on the left-hand side of the inequality:

2.39 + 4c = 20 - 2.39

4c = 17.61

Then, divide both sides of the inequality by 4 to solve for c:

c = 17.61 / 4

c = $4.40

So, the cost of each coffee in dollars is $4.40.