Question

F(x)=0.2x+78 represents the average test score in your math class where x is the number of the test taken. g(x) represents the average test score in your science class, where x is the number of the test taken. Determine the test average for your math class after completing test 2.

a) 78.4
b) 78.8
c) 79.2
d) 79.6

Answer 1

To find the math class test average after test 2, substitute x=2 into the equation f(x)=0.2x+78, which gives 78.4 as the test average.

Step-by-step explanation:

The question is asking to determine the test average for a math class after completing test 2 using the function f(x)=0.2x+78.

To find the average after the second test, you substitute x = 2 into the equation and do the calculation as follows:

f(2) = 0.2(2) + 78

= 0.4 + 78

= 78.4

Therefore, the test average for the math class after completing test 2 is 78.4, which corresponds to option a) 78.4.