Ruby is studying the mean waist size of all students attending her college. She collects data from the 25 students in her statistics class. Which type of sampling is used?

For which rational expression is -2 an excluded value of x?

The table shows the webster family’s monthly expenses for the first three months of the year. they are $2,687.44, $2,613.09, and $2,808.64. what is the average monthly expenditure for all expenses?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?