Determine if each of the following functions is odd, even, or neither.

1. $f(x)=3x^3+2$ 

   Hint (a):

   Review the Math Notes box in Lesson 2.2.5 for a reminder of odd and even functions.

   Step 1(a):

   Replace each $x$ with $−x$ and simplify. Did you get the same function as the one you started with?

   Step 2(a):

   Multiply the original functions by $−1$. Did you get the same function as the result of Step 1(a)?

2. $y=x^6+x^4$