7 miles Which rate can you set Thour equal to in order to find the distance traveled in 49 hours at 7 miles per hour?
7 hours
O ? miles
49 hours
o ? miles
? miles
7 hours
2 miles
49 hours

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.