A realtor gets a 3% commission on the sale of a house plus a weekly salary of $225. How much
does the realtor make in one week, including her weekly salary, if she sold a house for
$285,000?

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.