Boxes of granola are on sale at a price of 2 for $4.50. There are 12 ounces of granola on each box. What is the unit price in dollars per pound? (16 ounces = 1 pound)

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.