For four years, Marty Campbell invested $8,000 each year in Harley-Davidson. The stock was selling for $84 in 2014. $68 in 2015, S53 In 2016, and $65 in 2017. a. What is Marty's total investment in Harley Davidson? b. Aner four years, how many shares does Marty own? (Do not round Intermediate calculations. Round your answer to 1 decimal place.) Nunt of shares c. What is the average cost per share of Marty's investment? (Use the rounded number of shares computed in part b. Round your answer to 2 decimal places.) Average cost per share