National Credit Union pays 6.25% interest compounded semiannually on special notice savings accounts. Jessie McKenzie deposits $3,438.70 in a savings account for 2 years. At the end of 2 years, she deposits $5,000.00 in the account. How much is in the account at the end of 5 more years?

The answer is the numbers between =5 and 5

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.