We are given the following exponential function
[tex]T=70(1-0.075)^m[/tex]
Where T is the temperature in degree celsius and m is the time in minutes.
Let us find the temperature after 10 minutes.
Substitute m = 10 into the above function
[tex]\begin{gathered} T=70(1-0.075)^{10} \\ T=70(0.925)^{10} \\ T=70(0.45858)^{} \\ T=32.1\degree \end{gathered}[/tex]
Therefore, the temperature of the coffee is 32.1° after 10 minutes.
Option B is the correct answer.
