If yall answer this ill give you brainliest but only if you answer it right

Use the data on the dot plot to answer the question.how many people read for more than three hours last week? i'm on a unit test review

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 =

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8