A baseball team plays in a stadium that hold 25, 000 spectators. With ticket prices at $50, the average attendance had been 12, 000.

A baseball team plays in a stadium that hold 25, 000 spectators. With ticket prices at $50, the average attendance had been 12, 000. A market survey showed that for each $1 decrease in the ticket prices, on the average, the attendance will increase by 300.

a. Find an expression for revenue