Austin just bought a toy car it cost $15 his little brother buys toy cars that cost 1/3 the amount of austin's car. if austin's brother buy 4 toy cars how much money does he spend

The revenue each season from tickets at the theme park is represented by t(c)=5x. the cost to pay the employees each season is represented by r(x)=(1.5)^x. examine the graph of the combined function for total profit and estimate the profit after four seasons