In the game roulette a player can place a $10 bet on the number eight and have a 1/38 probability of winning if the metal ball lands on a player gets to keep the $10 paid in awarded $350

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.