Don leaves home at 2 pm

he drives 45 miles from his home in the first hour.

he stop for 90 minutes.

he then drives home at an average speed of 15. MP

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.

Write checks carefully, keep and accurate record of checks, and deposits made.