3.1 Milly's clothing manufactures and sells t-shirts. Each t-shirt costs $40 to make, and the company's fixed costs are $5000. In addition, Milly knows that the price of each t-shirt comes from the price function p(x) = 300 - 2x . Determine: 3.1.1 The company's revenue function, R(x). [2] 3.1.2 The company's cost function, C(x). [2] 3.1.3 The company's profit function, P(x). [3] 3.1.4 Using the vertex method, determine the number of t-shirts that will maximize profits and calculate the maximum profit that Milly will make [7]