Folsom Fashions sells a line of women's dresses. The company uses flexible budgets to analyze its performances. The firm's performance report for November is presented below: Actual Budget Dresses sold 5,000 6,000 Sales $ 235,000 $ 300,000 Variable costs 145,000 180,000 Contribution margin $ 90,000 $ 120,000 Fixed costs 84,000 80,000 Operating income $ 6,000 $ 40,000 What additional information would be needed for Folsom to calculate the dollar impact of changes in market share on November's operating income

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?