Which is the equation of a parabola with focus (-5, 3) and vertex (-5, 6)?
a. -12(y-6)* = (x + 5)
c. (x+5)* --12(y-6)
b. (x+5)* = -30(7-6)
d. (x + 5)2 = -12(y-6)
Please select the best answer from the choices provided

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 =