In the diagram below, points a and b represent two airplanes. how far apart are the airplanes?
a) 1,584 mi
b) 1,301 mi
c) 999 mi
d) 629 mi

The function y= x - 4x+ 5 approximates the height, y, of a bird, and its horizontal distance, x, as it flies from one fence post to another. all distances are in feet. complete the square to find and interpret the extreme value (vertex). select two answers: one extreme value and one interpretation.