Does anyone knows how to do this i don’t understand it.

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

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.

Which two undefined geometric terms always describe figures with no beginning or end?