.Find -23+57 and 57+-23

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?