Go to this link it has all the answers http://quizlet.com/16995072/respirtory-system-flash-cards/
Answer:
A. 5x+6
Step-by-step explanation:
-(9x-18)+8x
-3x+6+8x (multiply across the -1/3)
5x+6 (combine 8x and -3x)
You should try starting a conversation with him if you're in the same class/have a class together you can ask how he's liking the class. Don't straight up ask to be his friend that might make him confused. Work on it a little each day maybe even try to compliment him a few times. I hope this helpsss
To find rate of change, you find the change in the output values compared to the change in the input values and write it as a fraction
f(7) is
when x is 7, y=24
f(10) is
when x is 10, y=66
the difference in the y values is 42 when the x values change by 3
the average rate of change is 14