Brady seitz’s charge account statement showed a previous balance of $1,247.55, a finance charge of $4.72, and new purchases of $112.50. what is the new balance? a. $1,364.77 b. $1,987.00 c. $987.66 d. none of the above.

1247.55 - (4.72 + 112.50) =
1247.55 - 117.22 =
1130.33 <== none of the above

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.