Algebra 2 sem 1 quiz 1.2.3 formulating systems of equations

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

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.

Find the root(s) of f (x) = (x- 6)2(x + 2)2.