Solve for the unknown number of years in each of the following (Do not round intermediate calculations and round your answers to 2 decimal places, e. g., 32.16.): Present Value $21,500 Interest Rate 11% Future Value $430,258 Years - ?

With signals from no-claim bonuses and deductibles, a. the marginal cost curve for careful drivers lies to the left of the marginal cost curve for aggressive drivers b. auto insurance companies insure more aggressive drivers than careful drivers because aggressive drivers have a greater need for the insurance c. the market for car insurance has a separating equilibrium, and the market is efficient d. most drivers pay higher premiums than if the market had no signals