Final answer:
Exponential functions are best modeled by situations that involve exponential growth or decay, such as the depreciation of a car, compounded investments, and the annual growth rate of a city's population.
Step-by-step explanation:
An exponential function is best modeled by situations that involve exponential growth or decay. In this case, the situations that are best modeled by an exponential function are:
- The yearly depreciation of a car
- An investment compounded annually
- The annual growth rate of a city's population
Exponential functions have a constant base raised to a variable exponent, which results in a curve that grows or decays rapidly over time.