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

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