Final answer:
The equation that can be used to model a continuous exponential function is y = 2^x.
Step-by-step explanation:
The equation that can be used to model a continuous exponential function is y = 2^x. In an exponential function, the independent variable (x) is in the exponent, while the base (2 in this case) remains constant. This means that as x increases, the value of y will increase exponentially.