What is the simplified value of the expression

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 =

3/4 = c/36 i need with this fraction proble.

Which graph shows the solution to the system of linear inequalities? y-4t< 4 y