Suzanne wants to put a fence around her square garden. if the garden covers an area of 100 ft, how many feet of fencing does she need?

What is the quadric regression equation that fits these data

Ineed to know the answer to this algebra question.

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.