Scientists believe that the average annual temperature in some location is periodic. The average temperature of a given place during a given season fluctuates as time goes on, from colder to warmer, and back to colder. The graph shows an idealized description of the temperature (in ⁰ F) for approximately the last 150 thousand years of a location at the same Latitude as Anchorage, Alaska. a) Find the highest and the lowest temperatures recorded.

b) Use these two numbers to find the amplitude.

c) Find the period of the function.

d) What is the trend of the temperature now?.