You are on a committee to plan for a school dance and need to decide how much to charge for a ticket. Last year you charged $5.00 and sold 400 tickets. Earlier experiences suggest for every 10ยข decrease in price you will sell an extra 50 tickets. Write a function and graph to find the optimum price.
x = change in a value
Profit = (ticket cost)(tickets sold)
Profit=(5.00-0.10x)(400+50x)
max (21, 4205)
x = 21
ticket cost = 5-0.10x
ticket cost = 5-0.10(21)
ticket cost = $2.90