Answer:
i use slope calculators for these type of problems :)
Step-by-step explanation:
Answer:
The rate of change of the function is -5.
Step-by-step explanation:
Given : Function 
To find : What is the average rate of change ?
Solution :
Function 
The rate of change is the first derivative.

Derivate w.r.t. x,

Therefore, The rate of change of the function is -5.
Hope this helps sorry my writing is messy
Answer:
The common for the second question is 30
Answer:
2
Step-by-step explanation:
slope is 2 which is the rate of change