Help me with this problem ASAP, which are true?

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 =

Witch sequence shows a pattern where each term is 1.5 times the previous term

In triangle abc, angle c is a right angle. find the value of the trig function indicated. find tan a if c = 17 and a = 8