Suppose you notice that your grades on math assessments seem to vary sinusoidally. Your average is 86% and you earned that exact grade on Sept 15.(Use this as day 0) You hit your maximum on October 25 with a score of 98%. 1.Write an equation that models your grades. 2. What is your lowest grade and when did you earn it
3. Predict the date when you will again earn a 98%
4. Predict your date on the Dec 14th quiz
5.If your grades follow this pattern all year(Until June 15) how many times will you earn the maximum grade
6. Why are your grades varying sinusoidally anyway?