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A city charges a base fee of $20, plus $5 per 1,000 gallons of water used.
If billed $48, how much water did you use that month?
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Pay attention on how I edited your post in order for the problem MAKES sense.
The base equation is
= 48
The solution is
x = = 28*200 = 5600 gallons of water. ANSWER
Solved.