In the following exercises, translate to a system of inequalities and solve.
390. Annie has a budget of $600 to purchase paperback books and hardcover books for her classroom. She wants the number of hardcover to be at least 5 more than three times the number of paperback books. Paperback books cost $4 each and hardcover books cost $15 each.
(a) Write a system of inequalities to model this situation.
(b) Graph the system.
(c) Can she buy 10 paperback books and 37 hardcover books?
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