Part III: Open Ended Math Review Problems Instructions: For each of the algebra problems below, round your answer to 2 decimal places and record your answer on D2L without (if applicable) a comma. Thus, enter 3.24765 as 3.25 or. 18763 as 0.19 or 3,214.842876 as 3214.85. 31. Suppose that A=D+E and that D/A=0.86. Solve for A/E. 32. Suppose that A=D+E and that D/A=0.42. Solve for D/E. 33. Suppose that D+E=A, that N/A=.15 and that D/A=0.42. Solve for N/E. 34. Suppose that S/A=7.4 and N/S=.1125. Solve for N/A. 35. Suppose AD=E, that N=105,000,E/A=.75 and N/E=.40. Compute D/A. 36. Assume that S/A=5.8,D/A=.16,N/E=.75 and A=D+E. Solve for N/S. 37. Given the following ratio relationships: - D/E=2.10 - N/E=0.24 - D+E=A What is N/A? (Record your answer to a percent, rounded to I decimal place). 38. Alex and Sam also build tables. Together they make 34 tables in 12 days. Alex working alone can make 46 tables in 30 days. How many days would it take Sam working alone to make 46 tables? (Record your answer in days rounded to one decimal place. For example, if the answer you find is 4.2835 days, record 4.3). 39. Imani earned grades of 95,87 , and 83 on the first 3 exams in the class. Each of these exams is worth 20 percent of the total grade in the class and the Final Exam is worth 40 percent of the class grade (there is no "extra credit" possible and these are the only graded assignments in the class). What grade must Imani earn on the final exam to achieve a final course average of 93 (which will guarantee that she gets a letter grade of A in the class)? 40. Ed invests $68,000 in certificates of deposit (i.e., CDs) paying 1.75%. How much additional money does he need to invest in stocks that are expected to generate a return of 11.8% so that the average return on all of Ed's investments is 7.5%