Reflect the point (2, -4) over y = x to become... a) (-4, 2) b) (-2, 4) c) (-2, -4) d) (2, 4)

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

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.