A doctor's office schedules 10-minute and 20-minute appointments. The doctor also completes paperwork for four hours each weekday (Mon.-Fri.).
a.
Suppose the doctor limits these activities to, at most, 30 hours per week. Write an
inequality to represent the number of each type of office visit she may have in a week.
Let x represent the number of 10-minute appointments and y the number of 20-minute
appointments

(Hint 1. Be sure that when writing and solving the inequality that all units are the
same.. either ALL hours or ALL minutes.)
(Hint 2: Don't forget to include the four hours per day of paperwork into your
inequality.)

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