Question 2 (10 points) The marginal profit from the production and sale of x units of a product is estimated 100 to be 1+0.5x - 4. 5 dollars per unit. a. If P(0) = -60, find the profit function P(x) per unit of output. b. Find the profit per unit when the company produces and sells 120 units of output. c. What is the company's fixed cost per unit? d. How much would profit change if the company increases output to 150 units? Should the company expand? Why or why not