just need the step

ToQuit THECE DISCUSSION QUESOOFF Solve the problem below. For your initial post in Brightspace, copy the description of your company given in the box below and then enter your solution to all three parts (parts a, b, and c) of the problem. To copy the description of your company, highlighting and using "copy" from here in Mobius and then using "paste" into Brightspace should work. However, if when you copy and paste r you get r 2 instead, then change your r2 to /2. Hint: We covered this topic in "2-1 Reading and Participation Activities: Quadratic Equations" in Module Two. You can check your answer to part b to make sure that you are on the right track. For a certain company, the cost for producing r items is 60x + 300 and the revenue for selling 4 r items is 100x -0.5-2 The profit that the company makes is how much it takes in (revenue) minus how much it spends (cost) In economic models, one typically assumes that a company wants to maximize its profit, or at leas wants to make a profit! Part a: Set up an expression for the profit from producing and selling r items. We assume that th company sells all of the items that it produces. (Hint: it is a quadratic polynomial.)