Is this correct? Please help me due today.

What are the solutions to the equation 4x2+3x=24-x

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

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.