Modeling with Trigonometric Functions · Exercise 14

Graph the given function, and then find a possible physical process that the equation could model.

$f\left(x\right)=-18cos\left(\frac{x\pi }{12}\right)-5sin\left(\frac{x\pi }{12}\right)+100$ on the interval $\left[0,24\right]$

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Precalculus 2e · §7.6 Modeling with Trigonometric Functions · Exercise 14