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)

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.