When comparing linear, quadratic, cubic, and exponential functions, what key featuredo the all four function types share?

• The minimum value of all function types is (0, 0).
• The x-intercept of all four function types is (0, 0).
• The range of all four function types is all real numbers.
• The domain of all four function types is all real numbers.

The key feature that all four function types share is that the domain of all four function types is all real numbers.