Question

Which situation would be best represented by a linear function?

The temperature of a glass of ice water increases by a factor of 1.05 until it reaches room temperature.
Wind chill temperature decreases at a greater rate for a low wind velocity and decreases at a lower rate for a high wind velocity when the temperature is 10° Fahrenheit.
The outside temperature decreases at a constant rate per hour between sunset and sunrise.
The body temperature of a person with pneumonia increases rapidly and then decreases as an antibiotic takes effect.

Answer 1

"The outside temperature decreases at a constant rate per hour between sunset and sunrise."

Reason: a linear function models a constant rate of change. The other scenarios describe multiplicative/exponential change, variable rates, or nonconstant (rise then fall) behavior.