2.39x+2.79y=1344.50 where x is regular and y is premium
x+y=550
U will get x=475 y=75
75 gallon premium
Answer: 97
Step-by-step explanation:
Hey there! :)
Answer:

-1/5n + 7 = 2
Start by subtracting 7 from both sides:
-1/5n + 7 - (7) = 2 - (7)
-1/5n = -5
Multiply both sides by the reciprocal of -1/5, or -5.
(-5) · (-1/5n) = (-5) · (-5)
n = 25
Answer:
b
Step-by-step explanation:
Answer:
I believe it would cost 9 cents per cubic foot of gas.
Step-by-step explanation: