Plz fill the blanks

the number 72 lies between the perfect squares . so, the square root of 72 lies between the numbers , which means the square root of 72 is number.

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.