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
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