Test exam #4 time remaining: 00: 48: 55 submit test this : 1 pt 3 of 18 (5 complete) this test: 18 pts possib the marginal profit in dollars on brie cheese sold at a cheese store is given byp4+60x), where x is the amount of cheose the "profif is $80 when no cheese is sold. a. find the profit function b. find the profit from selling 300 pounds of brie cheese a. find the profit function. b. find the profit from selling 300 pounds of brie cheese. the profit from selling 300 pounds of brie cheese is $ enter your answer in each of the answer