If we add two equations in a normal. system. we have 6x+7y=32. explain why the same (X, y) pair is also a solution to this equation.(the new equation has the same solution because...

P= $1400,300 r = 7 1/2% t = 4 what is i ? $4.29 $429.00 $4290.00

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.

The holiday party will cost $160 if 8 people attend. if there are 40 people who attend the party, how much will the holiday party cost