John threw a surpise birthday party for hs friend. food , drinks, and a dj cost 480 for a group of 32 people . write and solve an equation to find the cost c per person.

480 /32 = 15  

that is what the answer is

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.