Benjamin threw a rock straight up from a cliff that was 40 ft above the water. If the height of the rock h, in feet, after t seconds is given by the equation   h equals negative 16 t squared plus 12 t plus 40, how long will it take for the rock to hit the water

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle. he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field