A48-fluid-ounce container of orange juice cost $2.40. a 60-fluid-ounce container of orange juice costs $3.60. which is the better buy?

The 48 fluid ounce container for sure.  The 48 fluid ounce is .05 cents per ounce while the 60 is .06 cents per ounce.

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.