These tables represent a quadratic function with a vertex at (0, -1). What is the average rate of change for the interval from x = 7 to x = 8?

answer: add the !

step-by-step explanation: then we will answer

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute:

14

step-by-step explanation: