2. Exercise Two: CDP plastics produces a line of economical, sun powered pocket calculators. The cost of production for this model is given by the function C(x) shown below - where x is the production volume in units. In addition, if the sunglasses sell for $10 per unit, the revenue function R(x) is shown below - where x is the sales volume in units. C(x) = 2x + 8000 R(x) = 10 x Based on the given information: (a) As shown in class today, derive the total profit function, (b) on the same Cartesian plane, graph the Cost function C(x), and the Revenue function R(x). (c) Find the break-even point numerically by using Goal Seek as shown in class