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20 September, 11:45

At an airport it costs 7 dollars to park for up to one hour and five dollars per hour for each additional hour. let x represent the number of hours parked. write the function function that models the cost of parking x hours, where x is an integer greater than one

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  1. 20 September, 11:53
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    I came up with 7+5 (x-1)

    7 is a fixed one time cost.

    5 (x-1). x-1 because you have already charged $7 for the first hour.

    Checking to make sure it is correct

    so if a person stays 1 hour

    7+5 (1-1)

    7+5 (0) = 7

    This answer makes sense because they get charged $7 the first hour

    so say they stay 3 hours

    7+5 (3-1)

    7+5 (2) = 17

    This answer makes sense because they get charges $7 for the first hour and $5 for the other 2. so 7+5+5=17.

    we can see that the function works
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