On Monday, Jess and Britt decided to see how fast they could sprint 300 meters. They asked their friend Nadia to time them with a stopwatch. Jess sprinted first and ran 300 meters in 47.16 seconds. When it was Britt's turn, he sped off and completed the run 40.66 seconds. ​How much faster was Brandon than Jessica in seconds?

7p=14 so then you would divide by p=2

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.