You purchase a stock for $20 and expect its price to grow annually at a rate of 9 percent. Use Appendix A to answer the questions. Round your answers to the nearest cent. a. What price are you expecting after four years? $ b. If the rate of increase in the price doubled from 9 percent to 18 percent, would that double the increase in the price? Doubling the growth rate the price appreciation. The increase in the price at 9% is $ and at 18% is $