Answer: I’m assuming the x3 is x to the power of 3! If so, then I believe the answer is (-∞, ∞)
Explanation: I attached a picture for what an x^3 graph looks like! Range refers to the y values of a graph starting from the lowest point, which in this case would be negative infinity (as it goes down.... forever), to the highest point (positive infinity, as it goes up forever)
I hope this helped! Sorry if this was a little confusing