SOLUTION: I need help on this problem, cant seem to get the right answer. Here's the question, "The airport garage charges $7 to park for the first hour and then $2.50 an hour for any additi

Question 656916: I need help on this problem, cant seem to get the right answer. Here's the question, "The airport garage charges $7 to park for the first hour and then $2.50 an hour for any additional hours. Ben paid $49.50 to park there one day when he flew to another city. How many hours was he parked at the airport?"
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = total hours parked at the airport
given:

18 = total hours parked at the airport

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