Function Domain Analysis: Energy Level Over Time Intervals

Question

Determine which domain corresponds to the described function:

The function describes a person's energy level throughout the day.

Step-by-Step Solution

Logically, a person's energy level throughout the day changes and depends on many factors.

On one hand, energy levels rise for example when a person eats or consumes caffeine.

On the other hand, energy levels drop when for example a person moves a lot or exercises.

Therefore, the domain that fits this function is - partly increasing and partly decreasing.

Answer

Partly increasing and partly decreasing