Answer:
The average rate of change of the function in this interval is of 18.
Step-by-step explanation:
The average rate of change of a function 
in an interval from a to b is given by:
In this question:
Where x goes from 5 to 7.
This means that 
. So
The rate of change is:
The average rate of change of the function in this interval is of 18.
Answer:
D
Step-by-step explanation:
A is not, because 2-5x = -5x+2
(nothing has changed but the order)
B is not, because 3-5+2x = 2x-2
because 3-5 = -2. so -2+2x can be rewritten as 2x-2.
C is not, because 5x-2x = 3x
because you combine like terms, and 5-2 is 3
D <em>i</em><em>s</em><em>,</em> because 2x-2+3x = 5x-2
because you combine like terms (2x+3x=5x) and -2 is left.
-3(6)-2-(-4(6)+10)
-3(6)-2-(-24+10)
-18-2--14
answer is -6
The graph is misleading because it appears to be showing a huge increase, however, it is showing this increase over a huge time span of 13 years, which is actually quite a small amount for only a few hundred customer increase.
