During the summer months Terry makes and sells necklaces on the beach. Terry notices that if he lowers the price, he can sell more necklaces, and if he raises the price than he sells fewer necklaces. The table below shows how the number
(a) Find a linear function of the form
(b) Find the revenue (number of items sold times the price of each item) as a function of price
(c) If the material for each necklace costs Terry
(d) Finally, find the price that will maximize the profit.
You can earn partial credit on this problem.