Ineed on my exam! (18pts! )

the linear function f(x) = 0.2x + 79 represents the average test score in your math class, where x is the number of the test taken. the linear function g(x) represents the average test score in your science class, where x is the number of the test taken.

x g(x)
1 86
2 84
3 82

part a: determine the test average for your math class after completing test 2. (2 points)

part b: determine the test average for your science class after completing test 2. (2 points)

part c: which class had a higher average after completing test 4? show work to support your answer. (6 points)