WILL MARK BRANILIEST. WHO HAS k12 AND ASNWERED THIS!!! To help you figure out transformations, I told you to ask yourself two questions:
and
Fill in one word per blank

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .

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.