1. Josh has a bag with 3 red marbles, 2 blue marbles, 8 green marbles, and 1 striped marble. He will pull out one marble from the bag without looking. What is the probability that Josh will pull out a green marble from the bag?

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.