Christopher bought a new watch at the store when they were having a 20\%20%20, percent off sale.
If the regular price of the watch was \, $48, how much did Christopher pay with the discount?

The answer to your question is i think 7

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.