SOLUTION: Due to the ongoing tension in the Middle East, Mobil begins charging people to line up at the pump. It costs $1.50 just to drive in and $2.75 for every gallon of gas that you pump

Question 165748: Due to the ongoing tension in the Middle East, Mobil begins charging people to line up at the pump. It costs $1.50 just to drive in and $2.75 for every gallon of gas that you pump. Write a linear equation that shows how much money you spend at Mobil in relation to how many gallons of gas you pump.
I am a bit confused about how to set this problem up and solve it. Can someone please help? Thank you
Answer by Mathtut(3670) (Show Source): You can put this solution on YOUR website!
when you visit this station it costs $1.50 to drive in whether you buy gas or not and the price is constant at $2.75/gal...so $1.50 is a constant and $2.75 is a constant....what changes the amount of gas you pump which we will call x. we will call what you spend at the station s.
so when you drive in you have 1.50+2.75(x)=s that would be the linear equation where x and s are unknowns without more information.
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