Question

On Monday, Freda spent $20 to buy 3 burgers and 4 orders of fries for her friends to share for lunch. Let r represent the cost of a burger and y represent the cost of an order of fries. What linear equation would model this?

Answer 1

Let:

r = Cost of a burger

y = Cost of an order of fries

Freda spent $20 to buy 3 burgers and 4 orders of fries for her friends to share for lunch, therefore:

`3r+4y=20`