Question

The temperature of a liquid during an experiment can be modeled by the function f(x)=3.8cos(πx20)+2.2 , where f(x) is the temperature in °C and x is the number of minutes into the experiment.

What is the lowest temperature the liquid reached during the experiment?

Answer 1

-1.6

Explanation:

I took the quiz K-12

Answer 2

we have that
the function is f(x)=3.8cos(πx20)+2.2

using a graph tool
see the attached figure

the answer is
the lowest temperature the liquid reached during the experiment is -1.6 °C