Please help me out :(

Anabel uses 10 gallons of gas to drive 220 miles on the highway. if she travels at the same rate, how many miles can she drive on 7 gallons of gas

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.