Over a four-year period, Matt Ewing purchased shares in the Oakmark I Fund. Use the following information: Year 2016 2017 2018 2019 Investment Amount $ 3,800 3,800 3,800 3,800 Price per Share $ 57 per share 42 per share 30 per share 48 per share (a) At the end of four years, what is the total amount invested? Total amount invested (b) At the end of four years, what is the total number of mutual fund shares purchased? (Round your intermediate calculations and answer to 4 decimal places.) Total number of mutual fund shares (c) At the end of four years, what is the average cost for each mutual fund share? (Round your intermediate calculations to 4 decimal places and answer to 2 decimal places.) Average cost of each mutual fund share