The linear function f(x) = 0.9x + 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)
1-78
2-79
3-80
part a: determine the test average for your math class after completing test 2.
part b: determine the test average for your science class after completing test 2.
part c: which class had a higher average after completing test 4? show work to support your answer.