Sarah launched a water balloon from the ground, standing 1 foot away from a wall. The balloon reached a maximum height of 64 feet and then hit the ground 17 feet away from the wall. Please please answer it please

The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.

If you have 12 feet of string and you cut it into equal length of 5 inches each how much string will be left