Does anyone know this?
(Step by step)

What is the average rate of change for this function for the interval from x=2 to x=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 =

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply