What is the correct definition of frequency with regards to physical fitness? the number of days one works out each week
the number of exercises done to prepare muscles for moderate to vigorous activity
the number of heartbeats per minute to am for during moderate to vigorous activity to benefit the circulatory system the
how much energy is used during a work out

The number of days one works out in a week

Frequency is how often you exercise. Usually we measure this by number of days each week.

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.

4if you add the absolute values together