1. The problem statement, all variables and given/known data The mean daily temperature in degrees Fahrenheit of a certain city on the xth day of the year is approximated by the function f(x)= 64 + 27 cos[(2π/365) (x+145)] (note: π = pie) Part d) Find the average mean daily temperature 2. Relevant equations 3. The attempt at a solution I have done part a to c of this problem. But when I got to part d, I really did not know how. I tried to plug it into the calculator and tried to find how to find the mean, but I could not find anything. Please help me to solve this.