Answer:
91%
Explanation:
Exponential growth or decay is modeled as:
A(t) = A₀ r^t
where A₀ is the initial value, r is the rate, and t is time.
Here, we're given that the function is:
C(t) = 24 (0.91)^t
As you found, the initial temperature is 24°C. Since the rate is less than 1, this is exponential decay. Each minute, the temperature changes by 91%.