What is the vertex of the function f(x) = x2 + 12x?
(-6, -36)
(-6,0)
(
60)
(6,-36)

6n^2-7n-75=0 solve by quadratic formula

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

You and a friend race across a field to a fence and back. your friend has a 50-meter head start. the equations shown represent you and your friend's distances dd (in meters) from the fence tt seconds after the race begins. find the time at which you catch up to your friend. you: d=∣−5t+100∣d=∣−5t+100∣ your friend: d=∣−313t+50∣∣