Answer:
D) Up on the left, up on the right
Step-by-step explanation:
When looking at the end behavior, the only term that matters is the 3x^4 term
as x goes to negative infinity
3 *(- inf)^4 = 3 * positive number = positive infinity
so as x goes to negative infinity f(x) increases
as x goes to infinity
3 *( inf)^4 = 3 * positive number = positive infinity
so as x goes to infinity f(x) increases
