Question

the world.
\[H(t)\] models the probability for the occurrence of heart disease (in percents relative to the global average) at an area where the temperature is
\[t\] degrees Celsius.
According to Alice's model, when the temperature is
\[-5\degree\text{ C}\] (which is the lowest temperature included in the model), the probability is
\[10\%\] above average. Then the probability decreases until the temperature reaches
\[30\degree\text{ C}\] (which is the highest temperature included in the model), where the probability is
\[20\%\] below average.
What's the appropriate domain?

Answer 1

The domain is the set of temperatures included in the model, i.e. all real t with -5 ≤ t ≤ 30 (degrees Celsius). In interval notation: [-5, 30] (°C).