Chapter 9 - Quadratic Functions and Equations - 9-7 Linear, Quadratic, and Exponential Models - Practice and Problem-Solving Exercises - Page 579: 22

Quadratic Since the second differences aren't the same, the equation won't fit perfectly.

$197-52=145$ $447-197=250$ $805-447=358$ $1270-805=465$ $250-145=105$ $358-250=108$ $465-358 =107$ The second differences are almost the same, so a quadratic function would work.