I need help with the question that is attached.

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 =

What is the inverse of f(x) = 6x -24

The bottom of a vase is a square. each side measury y+11 units. the square has a perimeter of 55 units what is the value of y?