Answer:
$2.52 per gallon.
Explanation:
5 1/4 or 21/4
x=0.25 or -1/4
Step-by-step explanation:
120x + 21 = -9
120x = -30 (-21 from both sides of equation)
x = -0.25 or -1/4 (divide 120 from both sides of equation)
I think it's the third one sry if I'm wrong