Elaine is at the local grocery store. She buys 6 apples and 3 pears for $3.45. Peter bought 3 apples and 6 pears at the same store and paid $3.30. How much is an apple? How much is the pear ?

She will need 5/8 bags for each square yard.

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.