A bird house company earns a weekly profit according to the function f(x} = 0.40;:2 + 80x 600 where x is the number of bird feeders built and sold. a] Find the number of bird feeders that the company must sell in a week to obtain the maximum profit. b) Find the maximum profit. a] The number of bird feeders sold to make the maximum profit is units. b) The maximum profit is S