Answer:
A function that has a domain and range that includes all real values is a function that is defined for all real numbers and also has a range that covers all real numbers. One such example is a linear function of the form:
\[f(x) = ax + b\]
where \(a\) and \(b\) are constants, and \(x\) can take any real value. This function has a domain of all real numbers and a range of all real numbers as well.
Another example could be a quadratic function:
\[f(x) = ax^2 + bx + c\]
where \(a\), \(b\), and \(c\) are constants and \(x\) can take any real value. If the quadratic function opens upward or downward and has a real root or roots, its domain and range would include all real numbers.
These are just a few examples, but there are various other types of functions that can have a domain and range comprising all real numbers.