In a group of 1,000 students, 260 are freshman, 250 are sophomores, 270 are juniors and 230 are seniors. What is the probability that a person chosen at random is NOT a sophomore? (2 points) .25
.50
.75
.03

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.

Add the fractions and simplify 1/2+ 1/3