which expression represents the phrase “13 less than the current amount”?
a. 13 – n
b. n + 13
c. n – 13
d. n look at the picture 13

The correct answer is 7

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.