Jay Leno is not just a famous comedian, he's also a savvy car collector. A while ago, Mr. Leno purchased a Shelby Cobra sports car for $24,500. Today, that car is valued at $43,800. How many years have passed since Mr. Leno's car purchase if the price of that Shelby Cobra has increased at an annual rate of 6.4 percent? 8.43 years 8.03 years 8.32 years 9.36 years 7.02 years