Atriangle pyramid with a based length of 9 inches a base height of 10 inches and height of 32 inches

How far could you drive on 50 gallons of gas

If 25% of y is 30, what is 60% of y?

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.