A student worked out at a gym continuously for 30 minutes. The graph shows the remaining percentage of the workout as a function of time in minutes. Which answer choice describes the domain of this situation?

Question

A student worked out at a gym continuously for 30 minutes. The graph shows the remaining percentage of the workout as a function of time in minutes. Which answer choice describes the domain of this situation?

All real numbers greater than or equal to 0 and less than or equal to 30
All real numbers greater than or equal to 0 and less than or equal to 100
0, 100
0, 30

Answer 1

The domain of this situation is all real numbers greater than or equal to 0 and less than or equal to 30. This is because the student worked out continuously for 30 minutes, so the function is defined for all values of time between 0 and 30 minutes.