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9 February, 10:50

An appliance company uses the function f

h. = 40h + 120 to calculate the total repair bill, f

h., for h number of hours worked. Find h if f

h. = $200.

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  1. 9 February, 14:27
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    Fh. = 40h + 120, fh. = $200

    200 = 40h + 120

    200 - 120 = 40h

    80 = 40h

    80/40 = h

    2 = h

    h = 2 hours.
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