Answer
No.
The graph of a quadratic model is a parabola.
If it opens upwards (concave up), then as we move to the right, the sales rise indefinitely, which is not realistic.
If it opens down (concave down), then it will eventually cross the x-axis into negative sales ... which is unacceptable.
So, in either case, the answer is no.
Work Step by Step
No steps involved. The answer contains the needed explanations.
