Please explain the steps and answer

Seasonal employment is a major part of the economy in many places. The Function L[m) = 550 cos(%(m 1]) + 3300 models the number of people employed in leisure and hospitality elds in Clatsop County, Oregon, in months after January 2004.' (Hint: Be sure to use Radian mode on your calculator.) Find the amplitude, period, equation of the midline, and phase shift for L. (Enter your answers in exact form.) amplitude period midline y = phase shift Explain what each tells about this situation