A biscuit recipe calls for 312 cups of flour to make 24 biscuits. Aaron wants to make only 8 biscuits, so he needs to use 13 of the amount of flour. How many cups of flour should Aaron use?

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.