Your Student Government Association decided to do a fundraiser to raise
money for a field trip. They decide to sell t-shirts and sweatshirts. The
profit for each t-shirt is $10 and the profit for each sweatshirt is $15.
They want to sell 50 items at most. Compared to t-shirts, they want to sell
at least half as many sweatshirts, with a profit of at least $500.
How do I Graph the system of inequalities.