Wombles corporation is contemplating purchasing equipment that would increase sales revenues by $478,000 per year and cash operating expenses by $249,000 per year. the equipment would cost $738,000 and have a 9 year life with no salvage value. the annual depreciation would be $82,000. the simple rate of return on the investment is closest to:

In a high school with 3000 students, counselors are putting together a math tutoring program for the neighboring middle school. they plan to invite high school students with high average test scores to tutor middle school students, and they would like to offer gift cards to the student tutors. the counselors have a spreadsheet showing each student’s average test scores, and in order to find out how many gift cards they should purchase, the counselors need to count how many students would qualify to become tutors. which type of function would best the counselors determine the number of eligible students?