Lana is using a can opener to open a can of soup every time she twists the knob of the can opener the can turns 36 degress

It takes 10 turns. There is 360 degrees in a circle, 360/36=10. 

Answer= 10 turns

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.

It will might be false