Please help! It's only three questions and I need to get it done by tonight! If you aren't going to give an actual answer, please don't answer at all.

answer: the answer is d

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.  

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