The figure below is a square. Find the length of side x
x in simplest radical form with a rational denominator.

The speed of a falling object increases at a constant rate as time increases since the object was dropped. which graph could represent the relationship betweent time in seconds, and s, speed in meters per second? speed of a falling object object over time

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55

Having a hard time understanding this question (see attachment).