At Geri’s school, 2 out of every 9 eighth-grade girls tried out for the volleyball team. If there are 216 eighth-grade girls at the school, how many tried out for the team?

Consider u = {x|x is a negative real number}which is an empty set? o {x|x eu and x has a negative cube root}o {x|x eu and x has a negative square root}{x|x eu and x is equal to the product of a positive number and -1}{x|x eu and x is equal to the sum of one negative and one positive number?