What is the average rate of change of f(x)=x2+x−6 between x=3 and x=9?

13

Step-by-step explanation:

The average rate of change of a function f(x) in the closed interval [ a, b ] is

here [ a, b ] = [ 3, 9 ]

f(b) = f(9) = 9² + 9 - 6 = 84

f(a) = f(3) = 3² + 3 - 6 = 6

average rate of change = = = 13

2 and 1.

step-by-step explanation:

plug in each answer. 0 doesn't work, 1 does. so does 2. 4 doesn't:

0 = 1 is not true.

2 = 2 is true.

4 = 4 is true.

8 = 16 is not true.

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