Question

Need Help. 25 Points! Please Show work, Thanks! :)

Answer 1

Answer:

B

Step-by-step explanation:

We want to find the quadratic regression formula given the table.

So, let's use the quadratic regression function on your graphing calculator. I don't have one on me, but I believe you simply need to enter the data and hit quadratic regression or something similar.

I'm going to use an online quadratic regression calculator by Keisan Casio.

Refer to the screenshot.

Note that it says to use the 24-hour clock to represent time after noon. So, 2 P.M. will just be 14, 4 P.M. will be 16, etc.

Therefore, our quadratic regression equation is, approximately:

$y=-0.511x^2+14.96x-35.8$

The choice that best represents this is B.

So, our answer is B.

And we're done!