How do i graph f9x0 = xsquared - 4

Billy plotted −3 4 and −1 4 on a number line to determine that −3 4 is smaller than −1 4 .is he correct? explain why or why not

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

Astraight water slide is 175 feet above ground and is 200 feet long. what is the angle of depression to the bottom of the slide?