Mayree is the owner of Spines Books, a small eclectic-style bookstore in a bustling college town. Mayree prides herself in selecting hard-to-find books and magazines that her clientele enjoy. Recently, Mayree is experiencing a cash flow shortage, and she is concerned that she may be purchasing too many copies of each title. Having recently completed a business class, you suggest to Mayree that she calculate the ratio for her store, and then compare it to other stores in her industry.

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?