Answer:
A. [tex]y = 10.89x^2-27.97x+55.87[/tex]
Step-by-step explanation:
We are given the table,
x y
1 20.4
2 60.5
3 86.8
4 122.4
5 180.4
6 241.2
7 420.8
Using the regression calculator, we get that,
The quadratic equation representing the data is [tex]y = 10.89x^2-27.97x+55.87[/tex]
So, option A is correct.
