If you added 2,500 pounds and 1 ton, what would the total weight be? 4,500 pounds

3,500 pounds

1/4 ton

3 1/2 tons

Solve the system of equations. y= 2x y= x^2 - 15

If 3x+8=3x+8 is it one solution or no solution

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.