Answer: Burgers cost $4.00 and a orders of fries cost $2.50
Step-by-step explanation:
b= burgers f=orders of fries
3b + 2f = 17 *you can solve by using substitution
2b + 4f = 18
(3b + 2f = 17)-2 *you have to get "f" eliminated
2b + 4f = 18
-6b + -4f = -34 *add them together
2b + 4f = 18
-4b = -16 *divide
b= 4 *now plug "b" into an equation (your pick)
3*4 + 2f = 17
12+2f=17
-12 -12
2f=5 *divide
f=2.5
