When Ruby was 2 years old her parents invested $2,000 and a money market account with an annual average interest rate of a percent her parents plan for Ruby to use the money in the account to pay for college and x years which of the functions below best represents the amount of money ,y, in the account when Ruby goes to college?

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.