Which statement best describes how to determine wether f(x)=x^3 +5x+1 is an even function

second option.

Step-by-step explanation:

By definition, a function is even when:

Then, knowing this, given the function you can substitute into this function:

Now you need to simplify the function. Then you get:

In this case, you can see that:

Therefore, the function is not even.

As you observed in the procedure above, the statement that best describes how to determine whether the given function is even is:

Determine is is equivalent to

step-by-step explanation: