Which set of ordered pairs does not represent a function? {(-6, -9),(-2, -3),(-9, 2), (2, -3)}
O{(-2,0), (-5,8), (7,9), (6,8)}
{(6,9), (-7,8), (1,-4), (8,8)}
{(-2,-6),(-1,2),(-2,- 7),(6,6)}

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?

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction

What is the perimeter of a rectangle if the length is 5 and the width is x?