Abag contains 2 blue marbles, 2 red marbles, and 2 yellow marbles.

if jenna randomly draws a marble from the bag (and puts it back) 15 times, how many times should she expect to pull a yellow marble?

You have a 2/6 or 1/3 probability of getting yellow. in order to get the denominator from 3 to 15 you multiply by 5 and you have to multiply the numerator by 5 too so you’ll get 5/15 which means jenna will get yellow 5 times in 15 tries

I’d say letter a..