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30 December, 05:30

Kevin works 3z hours each day from Monday to Friday. He works (4z-7) on Saturday. Kevin does not work on Sunday. Find the number of hours Kevin works in one week in terms of z

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  1. 30 December, 06:50
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    During a week:

    Kevin works 3z during 5 days

    kevin work (4z-7) during 1 day.

    Kevin work 0 during 1 day.

    z=unit time

    f (z) = number of hours kevin works in one week.

    f (z) = 5 (3z) + (4z-7) + 0

    f (z) = 15z+4z-7

    f (z) = 19z-7

    The number of hours kevin woirs in one week in terms of z is:

    f (z) = 19z-7
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