Aron is purchasing party hats and fake mustaches for an end of the school year party. He c spend at most $30. Fake mustaches cost $3 each, and party hats cost $2 each. If he must purchase a combination of at least 15 mustaches and party hats, which of the following syst of inequalities best models the relationship between the number of mustaches, m, and part hats, p, described above?
