These tables represent an exponential function. Find the average rate of change for the interval from x = 7 to x = 8.
X
Interval
0
1
2.
у
1
3
9
27
81
243
729
Average rate
of change
2
]x3
6
]x3
18
4]x3
54
|]
162
1]x3
486
0 to 1
1 to 2
2 to 3
3 to 4
4 to 5
5 to 6
3
4
H
5
-
6
O A. 2187
O B. 4374
C. 6561
D. 3