Mark is a student, and he
is a student, and he can work for at most 20 hours a week. he needs to earn at least $75 to cover
expenses. his dog-walking job pays $5 per hour and his job as a car wash attendant pays $4 per hour. write
eds to earn at least $75 to cover his weekly
inequalities to model this situation.
endant pays $4 per hour. write a system of