You can answer the question or get free points. I recently purchased a gaming console that was on sale for 20% off at the local mall. I later found that it was available to purchase online at a regular price of $320 plus a 5% off coupon. If purchasing online with the coupon would have saved me $20 from what I ended up spending, what was the original price of the gaming console at the mall?

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.