Carlos received a gift card of 100 for a pizza restaurant. The restaurant charges 15 per pizza. Amy received a gift card of 70 for a different pizza restaurant. The restaurant charges 10 per pizza.

Question

Just make an expression for carlos one for amy, and make an equation out of both expressions

Answer 1

With a gift card of 100 and a price of 15 per pizza, Carlos can buy 100 / 15 = 6.67 pizzas. Since he can’t buy a fraction of a pizza, he can buy at most 6 pizzas.

With a gift card of 70 and a price of 10 per pizza, Amy can buy 70 / 10 = 7 pizzas.

Answer 2

I could be misinterpreting what is written, but what is the question being asked? It seems like more information may be needed. If you're trying to find how many pizzas they can each by with their gift cards, it would be as follows:

Carlos: 100 - 15p ≥ 0

Amy: 70 - 10p ≥ 0

Where in both inequalities, p represents the number of pizzas they purchase.

You set it greater than or equal to zero so that they do not spend more than the gift cards they received.