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

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

Solve 2x − 1 = 11 for x using the change of base formula log base b of y equals log y over log b.