Comparing shapes of functions quick check
Check the final answer first, then review the worked steps.
Problem
Comparing shapes of functions quick check
Step-by-step solution
Linear, quadratic, cubic, and exponential functions can all have a domain that includes all real numbers. For example, $f(x) = x$, $f(x) = x^2$, $f(x) = x^3$, and $f(x) = 2^x$ all have domains of $(-\infty, \infty)$.
Answer
The domain of all four function types is all real numbers.