D. 12.5
The equation to find the average rate of change is

To find the average rate of change between points (0,20) and (8,120) you need to plug it into the equation so it'll be

this simplifies to

which is 12.5
Answer:
10 miles is answer because u should divide d=r
4/5 and 40/50 are both equivalent
Answer:
The most number of layers he can afford is 2
Step-by-step explanation:
We automatically have a fee of 17 so we know we have 13 dollars remaining. Using this information, we know that one layer is 5 dollars which means we can get 2 layers which is equal to 10 dollars which turns our total fee to $27. Hope this helps!
Hey there
That's easy
Divide 2750 by 40 and a good estimate would be 68 dollars
Hope this helps