Of 30 students. exactly 15 are athletes, 10 are on student council, and 8 are in the band. Only 3 athletes are in the band and only 4 nonathletes are in the band. In the group, a person who is an athlete may be in the band and in the student council but not in one or the other alone. How many of the 30 students are not athletes in student council, or band?

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay

(: the two box-and- whisker plots below show the scores on a math exam for two classes. what 2 things do the interquartile range tell you about the two classes?