When Bill Nye was first learning to type, he typed at a rate of 7.8 words per minute. How many words could he type in 4.7 minutes? I KNOW HOW TO DO THIS BUT CAN SOMEONE TELL ME IF IM SUPPOSED TO ROUND OR KEEP IT AT 36.66 CAUSE ITS WORDS

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.