What is the approximate percent change in a temperature that went down from 120 degrees to 100 degrees? The percent change is approximately 17%.
The percent change is approximately 20%.
The percent change is approximately 80%.
The percent change is approximately 120%.

17%

Step-by-step explanation:

:000

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10