The height ,h, in meters above the ground, of a projectile at any time, t, in seconds after the launch is defined by the function h=-4t squared + 48t + 3. find the maximum height reached by the projectile

The height h in metres above the ground of a projectile at any time t in seconds after the launch is defined by the function h(t)=-4t +48t +3 A.) Complete the square to write H in standard form b.) Find the height of the projectile three seconds after the launch c.) Find the ...