20 pts! !   how do you solve the following:

The heaviest 16% of all men in weight weigh more than how many pounds ?

Which expression is equivalent to 2x^2+7x+4?

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 =