Question

Mario's Pizza just received two big orders from customers throwing parties. The first customer, Ruth, bought 4 regular pizzas and 4 deluxe pizzas and paid $112. The second customer, Gabrielle, ordered 4 regular pizzas and 1 deluxe pizza, paying a total of $52. What is the price of each pizza?

Answer 1

Regular pizzas are $8 and Deluxe pizzas are $20

Explanation:

if you go to Desmos graphing calculator you can use it to solve this problem

We are going to make to line graphs to represent each situation.

We'll let x equal the price for regular pizzas and y be equal to the price for deluxe pizzas.

For Ruth:

4x + 4x = 112 <--- type this in the first line on the graphing calculator then hit enter to make another line

For Gabrielle:

4x + 1y = 52<---- type this in the second line you made

The two lines should intercept at the point (8,20) this interception represents the price of the pizzas. The x value (8) is the price of your regular pizzas and the y value (20) is the price for your deluxe pizzas