Several schools reported the number of students who received a flu vaccine in a year and the number of cases of the flu amongst their students that year. A scatter plot was made with a trend line that had an equation of y = -1/4x + 85, where y is the total number of cases of the flu and x is the total number of students who received a flu vaccine. Use the data to answer the questions below.
Predict the number of cases of the flu that would occur if 300 students receive a flu vaccine.