A waterfall has a height of 1000 feet. A pebble is thrown upward from the top of the falls with an initial velocity of 24 feet
per second. The height, h, of the pebble after t seconds is given by the equation h= - 16t² +24t+1000. How long after
the pebble is thrown will it hit the ground? Use a graphing calculator to solve the problem.



HELP PLEASEAA ASAP !!