Bob earns 51 dollars per week working part-time at a book store. He makes one dollar more for each book that he sells. The amount, A (in dollars), that Bob earns in a week if he sells b books is given by the following function.
A (6) = 51 + 6
How much does Bob earn in a week if he sells 35 books?

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.