HELP ME PLEASE*

Ajax corp's sales last year were $435,000, its operating costs were $362,500, and its interest charges were $12,500. what was the firm's times-interest-earned (tie) ratio? a. 4.72b. 4.97c. 5.23d. 5.51e. 5.80

Assume the total cost of a college education will be $250,000 when your child enters college in 17 years. you presently have $69,000 to invest. what annual rate of interest must you earn on your investment to cover the cost of your child’s college education? (do not round intermediate calculations. enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)

Alex is the r& d manager with digital copier inc. the company is having a problem with one of its most popular copiers jamming. the vice president of marketing told alex that "we need to quickly discover how to turn this problem into a desirable situation. you need to determine the underlying cause of the problem and perhaps even make improvements to the copier." when alex analyzes the underlying causes of the paper-jam problem, which function is he performing? a. synergy b. diagnosis c. analytics d. feasibility e. mbo