Eighteen students in a class play baseball. Seventeen students in the class play basketball Thirty students in the class play either or both sports select the venn diagram that shows the number of students who play basketball and baseball

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.

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16