A child starts a playground swing from standing and doesn't use her legs to keep swinging. On the first swing she swings forward by 18 degrees, and on the second swing she only comes 13.5 degrees
forward. The measure in degrees of the angle m (n) is an exponential function of the number n of
swings.
a) Create the equation of the function.
b) Graph the function
c) What kind of function can you see?