Tony spent $100 on books to give five away as prizes to his student. at the store he bought 4 more books than planned, spending $5 per book. which equation can be used to find the number of books he originally wanted to buy, x?

Which is the completely factored from of xy^3-x^3y

15 points! write the slope-intercept form of the equation of the line through the given point with the given slope. use y-y = m(x-x) to solve. through (2,5) slope= undefined

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.