### Home > INT3 > Chapter 8 > Lesson 8.2.1 > Problem 8-66

8-66.

Decide if each of the following functions is a polynomial function. If it is, state the degree. If it is not, explain how you know. Homework Help ✎

*f*(*x*) = 3*x*^{3}– 2*x*+ 5*y*= 0.25*x*^{7}– 5*x**y*= 3–^{x}*x*^{2}*f*(*x*) =*x*^{2}–+ 2 *Q*(*x*) = 3(*x*– 4)^{2}(*x*+ 2)*y*=*x*^{2}– 3*x +*5 –

Review the Math Notes boxes in Lessons 1.1.4 and 8.1.1.

Yes; degree 7

No; it contains an exponent of *x*.

The expoenents must be whole numbers. What is the exponent of a square root?

If you were to expand and simplify, what would be the highest power of *x*?