State whether the function is a polynomial function or not. If it is, give its degree. If it is not, tell why not.
-$f ( x ) = 5 x + 7 x ^ { 3 }$
A) Yes; degree 7
B) Yes; degree 1
C) Yes; degree 3
D) Yes; degree 5

Question

Quizplus · Accepted Answer

The function $f(x) = 5x + 7x^3$ is a polynomial because it is a sum of monomials (terms of the form $ax^n$ where $n$ is a non-negative integer), and its highest degree term is $7x^3$, making its degree 3.

State Whether the Function Is a Polynomial Function or Not f(x)=5x+7x3f ( x ) = 5 x + 7 x ^ { 3 }f(x)=5x+7x3

State Whether the Function Is a Polynomial Function or Not $f ( x ) = 5 x + 7 x ^ { 3 }$