Find examples of grocery store items newspaper, on television, on the internet, or make it up. compare unit prices of two different brands of the same item. explain which item is a better buy.

Color pencils
Crayola- $4
Faber Castell- $5

Even though Faber Castell is a bit more expensive, Faber Castell is a more sustainable and a longer using brand.

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.