A music store is selling posters and CD's. The store profits $3.00 from each poster sold and $5.00 from each CD sold. The store needs to make an average profit of at least $200 per hour to stay in business. Using x as the number of posters sold and y as the number of CDs sold, write and graph an inequality for the number of each item the store needs to sell per hour to stay in business. If 15 posters are sold, how many CDs must be sold?

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