Question

What is the average rate of change of the function represented by the table between x = 1 to x = 3 months, and what does the average rate represent?
0 400
1 320
2 240
3 160
that is the graph

Answer 1

A = value of the function at x = 1
B = value of the function at x = 3

rate of change = (B-A)/(3-1)