Sean wants to make a frame for a painting. The painting is square and has area 196 square inches. The framing material costs $1.05 per inch. How much will he spend? You may assume that the framing material buys will be the exact amount needs.

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.