The height of a ball Doreen tossed into the air can be modeled by the function h(x) = -4.9x^2 + 6x + 5, where x is the time elapsed in seconds, and h(x) is the height in meters. The number 5 in the function represents Option 1) the initial height of the ball

Option 2) the time at which the ball reaches the ground

Option 3) The time at which the ball was at its highest point

Option 4) the maximum height the ball attained when thrown in the air​

Ascientist places 24 cells in a petri dish. she knows the cells grow at an exponential rate, doubling in number every hour. how long will it take (in hours) for there to be 1100 cells in the dish? time to 1100 cells: 5.51832530 hours how long will it take to reach 110 cells? time to 110 cells : 2.1963972 hours what is the average rate of change in the number of cells between 9 hours and 11 hours? average rate of change: cells per hour what is the instantaneous rate of change after 7 hours? instantaneous rate of change: cells per hour note: you can earn partial credit on this problem.