primo car rental agency charges $23 per day plus $0.10 per mile. Ultimo car rental agency charges $22 per day plus $0.50 per mile. Find the daily mileage for which the Ultimo charge is four times the Primo charge

For a 0.25 pfor b o.3pp (0.25+0.3)=0.28

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.