Arestaurant manager wants to purchase 200200 sets of dishes. one design costs $1010 per set, while another costs $5555 per set. if she wants to use her entire budget of $78507850, how many of each design should be ordered?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

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.

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?