Domain of modeling functions

The  exercise appears under the Algebra I Math Mission. This exercise practices using information about a situation to figure out the domain of the function which models it.

Types of Problems
There is one type of problem in this exercise:
 * 1)  Which number type is more appropriate for the domain of the function? Define the interval of the domain.: This problem has story problems that can be solved by using modeling function, and user is asked to first find which number type is more appropriate for the domain of the function, and define the interval of the domain.

Strategies
Knowledge of modeling functions are highly recommended to ensure success in this exercise.
 * 1) The domain of a function is the set of all inputs for which the function is defined.

Real-life Applications

 * 1) The problems of this exercise can be looked at as real-life applications.
 * 2) Problems like this will appear on standardized tests, like the SATs and the ACTs.