Over a four-yeat perlod, Laketsha Thompson purchased shares in the Oakmark Investor Class Fund. Using dollar cost averaging. calculate the number of shares before completing this problem. (Round your answers to the nearest whole number) Year Nurnber of Shares February 2017 February 2018 February 2010 February 2020 Investment Amount Price per Share $ 2,300 $ 44.00 5 2,300 $ 25.00 $ 2300 3 38.40 $ 2,300 3 48.00 a. At the end of four years, what is the total amount invested? Total investment b. At the end of four years, what is the total number of shares purchased? (Round your intermediate calculations and final answer to the nearest whole number) Total number of shares At the end of four years. What is the average cost for each share? (Round your intermediate calculations to the nearest whole number. Round final answer to 2 decimal places) Average cont