The next model of sports car will cost 4.2% less than the current model. The current model cost 53,000. How much will the price decrease in dollars? What will be the price of the next model?

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.