Which quadratic regression equation best fits the data set?

x y

0 48

1 39

2 35

4 23

6 16

10 3

11 2

Answers:

yˆ=0.246x^2+6.815x+47.062

yˆ=0.246x^2−6.815x+47.062

yˆ=47.062x^2−6.815x+0.246

yˆ=47.062x^2−6.815x−0.246

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b? define a variable for the situation. write an inequality that represents the situation. solve the inequality to find out how many months he needs to keep the website for site a to be less expensive than site b. using words, describe how many months he needs to keep the website for site a to be less expensive than site b.

Which expression is equivalent to 2x^2+7x+4?

Which of the following expressions are equivalent ?