These tables represent an exponential function. find the average rate of
change for the interval from x = 8 to x = 9.
х
y
1
interval
average rate
of change
2
3
]*3
9
]x3
27
o to 1
1 to 2
2 to 3
3 to 4
4 to 5
5 to 6
i
18
54
162
81
-]x3
i
7x3
]x3
243
729
486