Answer:
18 miles per gallon
Step-by-step explanation:
I believe its 18
216 divided by 12 is 18
Have a wonderful day! <3
y = 16
x = 2
y = 8x
y = 4x + 8
then, by substitution:
8x = 4x + 8
8x - 4x = 8
4x = 8
x = 8/4
y = 8*2
Check:
y = 4*2 + 8
16 = 8 + 8
Answer:0!