Please help me answer this:)

Will give you brainlst ^

Rectangle leg this 11feet and perimeter of 38feet what is the width of the rectangle in feet

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 ordered pair of m’ after point m (5, 6) is rotated 90° counterclockwise?