Mark is a student, and he can work for at most 20 hours a week. He needs to earn at least $75 to cover his weekly expenses. His dog-walking job pays $5 per hour and his job as a car wash attendant pays $4 per hour. Write a system of inequalities to model the situation, and graph the inequalities.
To find: A system of inequalities to model the situation, and graph the inequalities.
Answer to Problem 10P
. A system of inequalities to model the situation is
Explanation of Solution
Given information: Mark is a student and he can work for at most 20 hours a week. He needs to earn at least $75 to cover his weekly expenses. His dog-walking job pays $5 per hour and his job as a car wash attendant pays $4 per hour.
Calculation:
Let number of hours Mark does dog-walking job be
A.T.Q
The required graph of the system of inequalities is
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