A tank full of water is leaking at a constant rate for 30 minutes. The equation is y=-9x+500

Given f(t) = 282 - 53 +1, determine the function value f(2). do not include f(z) = in your answer

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.

What is the difference between the equations of a vertical and a horizontal line?