How would you solve?

A professor wants to study the performance of high school students of district W in the mathematics final exam. To study the? performance, he uses the marks scored by the students in mathematics M as a function of the average number of hours spent by the student on practice H and number of days the student attended the mathematics class in school D. For his? study, he selects a random sample of 200 high school students and estimates the following regression? function:

Ha: P2 = VS.F