Mrs katz is buying apples and carrot cake for a school party. the apples cost $2.12 per pound. the carrot costs $19.75 estimate the cost for 3 pounds of apples and 1 cake

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.