d.

Did you know that the equation represents a cubic function? This means its graph will have that classic “s-shaped” curve known as a cubic curve. It’s interesting how it can model real-world phenomena, like the flow of certain fluids or even the trajectories of certain spacecraft when analyzing their motion!

When working with cubic functions, a common mistake is to forget about the critical points and inflection points! Make sure to differentiate the function to find where the slope is zero (which corresponds to local maxima and minima) and where the concavity changes. Analyzing these points can help sketch the graph accurately and understand its behavior better!