For four years, Marie invested $2,000 each year in a banks stocks. The stocks sold for $35 in 20X1, $54 in 20X2, $46 in 20X3, and $54 in 20X4. a. What is Maries total investment in this bank? (Omit the "$" sign in your response.) Total investment $ b. After four years, how many shares does Marie own? (Round your intermediate calculations DOWN and round your final answer DOWN to the nearest whole share.) Total number of shares c. What is the average cost per share of Maries investment? (Round DOWN your intermediate calculations to the nearest whole share. Round your final answer to 2 decimal places. Omit the "$" sign in your response.) Average cost per share $