The figure shows the graphs of the cost and revenue functions for a company that manufactures and sells external hard drives. The solid line represents the revenue function, R(x)=45x; the dashed line represents the cost function, C(x)=10,000+25x. AY 40,000- 30,000- Rix)-45x a. Use the formulas to write the company's profit function, P, from producing and selling x hard drives. 20,000- Cx)=10.000+25x b. Find the company's profit if 18,000 hard drives are produced and sold. 10,000- a. The company's profit function is P(x)=(Simplify your answer.) b. The company's profit from producing and selling 18,000 hard drives is $ 0 X 800 400 600 200 Hard Drives Produced and Sold (Simplify your answer.)