Am i correct if i am not give me the right answer and i’ll give points. you

What is 1/2 x (6 x 4)+3 + 2 show your work

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.

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities