4 An office supply company sells q mechanical gizmos per year at 8p per gizmo. The demand equation for these gizmos is p=20-0.003q. The gizmos cost 83 apiece to manufacture, plus there are fixed costs of 810,000 per year. 1. Find the total yearly cost function C(q) for these gizmos. egiemos 2. Find a function for the reverme R(q) for these gizmos. 3. Find a function for the yearly profit (g) for these 4. Find a function for the marginal profit for these gizmos 5. What price maximizes the profit?

Fig: 1