IM SORRY THIS IS LONG BUT I CANT SOLVE AND RLLY NEED HELP. Mark makes 5$ an hout in tips working at a videogame store, and 7$ an hour working at a landscaping company. Mark must work at least 4 hours in the videogame store per week. The total amount of hours he works at both must (as in all the hours added up) be less than 15.
a. Write a system of linear inequalities to model the number of hours Mark could work at each location per week.
b. Graph the inequality
c. If Mark works 7 hours in the videogame store, how many hours (max) can he work in the landscaping company?
d. How much money would he make?