1. evaluate the expression 2x - 7, when x= -6

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2