The first ferris wheel ever built was created by Gale Ferris in 1893. The following chart shows the height of carts at
various points of time.
Time (min) 0 2.25 4.5 | 6.75 9
Height (meters) 8 46 84 46 8
a) Write the regression equation that best describes the
height of a cart on the ferris wheel after t minutes.
b) What is the period of the function?
c) How high is the ferris wheel off the ground?

Simplify the expression. enter the correct 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.

I'm confused on this could anyone me and show me what i need to do to solve it.