Fig the function shown in the table below, which of the following is its average fate of change ever the interval 2≤x≤10
1.3/4
2.-2
3.-1/2
4.-3./2
2. What is the average rate of change of g(x)=x² on the interval 3≤x≤9
(1) 8
(3) 15
(2) 12
(4) 18