For four years, Marty Campbell invested $7,000 each year in Harley-Davidson. The stock was selling for $74 in 2014, $76 in 2015, $57 in 2016, and $77 in 2017.

a. What is Mary's total investment in Harley-Davidson?

b. After four years, how many shares does Marty own? (Do not round intermediate calculations. Round your answer to 1 decimal place.)

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.)