Solve the problem.Tickets to a ballet cost $15 if bought in advance. If bought on the date of the ballet, they cost $20. For the ballet to make a profit, the total money collected from ticket sales must be at least $350. Write an inequality to represent this situation, using x for the number of tickets bought in advance and y for the number of tickets bought on the date of the ballet. Graph the equation.
A. 15x + 20y ? 350
B. 15x + 20y ? 350
C. 15x - 20y ? 350
D. 15x - 20y ? 350
Answer: A
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