Which expression is equivalent to −1/12x−1/3 ?

1/12(−x+4)

1/12(−x−1/4)

1/12(−x−1/3)

1/12(−x−4)

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

The verbal translation for the difference of m and 7 increased by 15

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 =