For four years, Marie St. Louis invested $2,350 each year in a bank's stocks. The stock sold for $43 in 2008, $51 in 2009, $37 in 2010, and $59 in 2011. a. What is Marie's total investment in this bank? (Omit the "$" sign in your response.) Total investment b. After four years, how many shares does Marie own? (Round your intermediate calculations and final answer to 1 decimal places. Total shares c. What is the average cost per share of Marie's investment? (Round your intermediate calculation to 1 decimal place and final answer to 2 decimal places. Omit the "$" sign in your response.) Average cost per share