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)

Given: The linear function f(x) = 0.2x + 79 represents the average test score in 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        1      2    3

g(x)   86  84   82

To Find : test average for math class after completing test 2

test average for science class after completing test 2

Which class had a higher average after completing test

Solution:

f(x) = 0.2x + 79

=> f(2) = 0.2(2) + 79 = 79.4

test average for math class after completing test 2 = 79.4

f(x) = 0.2x + 79

=> f(4) = 0.2(4) + 79 = 79.8

test average for math class after completing test 4 = 79.8

x        1      2    3   4

g(x)   86  84   82  80

g(2) = 84

test average for science class after completing test 2 = 84

g(4) = 80

test average for science class after completing test 4 = 80

80 > 79.8

science class has more average than math after 4 test

sorry its sloppy I didn't have much time

a. How much cost to buy 10 tickets?

For this case what you must do is replace the value of x = 10 in the given equation.

We have then:

C (x) = 17.5x - 10

C (10) = 17.5 * (10) - 10

C (10) = 165

to buy 10 tickets cost:

$ 165

b. How many tickets can you buy with $ 130?

For this case we must make the substitution: C (x) = 130

We have then:

C (x) = 17.5x - 10

130 = 17.5x - 10

Clearing x we have:

17.5x = 130 + 10

17.5x = 140

x = (140) / (17.5)

x = 8

You can buy 8 tickets with $ 130

Step-by-step explanation: