6 to the 4th power x 6 to the 4th power

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 =

Which is the focus of a parabola with equation y2=4x

What is y-5=3(x+1) in slope intercept form