9th grade trinomial questions Algebra The quadratic parent function is moved down 7 units, shifted to the left 4 units, and reflected across the x axis. What equation describes this transformation?

A. y= (x+4)^2-7
B. y= -(x-4)^2+7
C. y= (x-4)^2+7
D. Y= -(x+4)^2-7

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

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.

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cot of 61.6