A jewelry store originally purchased a titanium watch at a cost of $968.80 and marked it up 20%. After a few weeks, however, the store discounted the watch 75% in order to make room for new merchandise. What was the discounted price?

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.