Bri goes to the movies and buys three items that together sum to $11.50. Two of the items she bought cost $3 each. Write an equation to express how much money Bri spent at the movies.

the answer is $5.5

Step-by-step explanation:

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.