Find quartile 1, quartile 2(median) and quartile 3 of the data set {1,1,1,1,2,3,3,4,5,6,6,7,8,8,9,9}. what is the iqr of the data set?

Measures of the angle of r, 31 s (x+4) t (3x+9)

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

Using only odd number for numerators write two different subtraction problems that have a difference of 3/4