A student makes a model rocket using a soda bottle. When launched, the rocket's height, in feet, is given by the function h(d) = -(d-9)2 + 81,
where d represents the distance the rocket is from the launch pad.
What is the height of the rocket when it is 15 feet from the launch pad,
represented by h(15)?

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.