Figure B is a scaled copy of Figure A. 33
33
33
15
Figure A
11
11
11
5
Figure B
What is the scale factor from Figure A to Figure B?

The answer is

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.