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Use a graphing calculator or other technology to answer the question.

Which quadratic regression equation best fits the data set?

yˆ=1568.065x^2+115.265x+2.608

yˆ=2.608x^2−115.265x+1568.065

yˆ=1568.065x^2−115.265x+2.608

yˆ=2.608x^2+115.265x+1568.065

x y

15 423

17 398

19 308

20 255

21 297

25 365

29 401

i think its B

jjennylove Feb 7, 2019

#1**+2 **

I like this website for this : https://keisan.casio.com/exec/system/14059932254941

However.....you have to be careful of the output form...

They give it as A + Bx + Cx^2

But.....our desired form is Cx^2 + Bx + A

The correct equation is

y = 2.608x^2 -115.264 + 1568.065

CPhill Feb 7, 2019