Answer:
D.
40 x 6.4 = 256
256/128=2 so 2 gallons.
Step-by-step explanation:
9
Answer: x=9
12=x+3
-3 -3
9=x
-27
f(a) = -3a + 3
f(10) = -3(10) + 3
= -30 + 3
= -27