Which set of ordered pairs represents a function? {(-2,5), (6,9), (8,4), (8,7)}
{(-1,4), (-5, -2), (6,1), (-2,-2)}
{(-5, -6), (-5,3), (-7,-8),(-1,-9)}
{(-8,-4), (-8,-5), (-6, -1), (3,6)}

How many zeros does the function f(x)=4x3-x2+1 have

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m

For the inequality |c| < |d| to be true, which of the following must be true?