Which problem is the same as 4 + 5

Given f(x) = 17-x^2what is the average rate of change in f(x) over the interval [1, 5]?

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'