Hurry 10 points i need this for an assinement what is the formula for finding simple interest? explain the meaning of each of the variables in the formula.

Adozen bananas weigh 3 pounds how many ounces does 1 banana weigh

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.

If value of cos330° is √3/2 then find tan165°.