q(x) = e^(3x) represents an exponential function where the base is e (Euler's number, approximately 2.71828), and the exponent is 3x.
Exponential function: A mathematical function in which a constant base is raised to a variable power.
Base (of an exponential function): The constant number being raised to a power in an exponential function.
Exponent: The power or index to which a base is raised in an exponential function.