Question

Write a system of equations in x and y describing the situation an order of fries 2 hamburgers and 3 drinks cost $12 an order of 4 order of fries 3 hamburgers and 5 drinks cost $15 all drinks are $1

Answer 1

Let h be the price of a hamburger, d be the price of a drink, and f for the prices of fries.
2h+3d=12
4f+3h+5d=15
d=1
this is a system of 3 equations.