Tim would like to compare the climate of Sydney Australia to
     Tim would like to compare the climate of Sydney. Australia, to the climates of the other 3 cities. He collects data for the day of the year t and the average daily high temperature H in degrees Fahrenheit. As before, t = 0 represents January 1, and t = 364 represents December 31.  Use your graphing calculator to perform a sinusoidal regression on the data. Write the function in the form a sin(bt/ + c) + d. Round off a and d to 2 decimal places, and b and c to 4 decimal places. Circle the letter(s) of all statements that would accurately describe the climate of Sydney in comparison to the other cities. Remember that summer in the Southern Hemisphere is the months of December. January, and February.  Similar temperature to Buenos Aires, but hotter in the summer.  Similar temperature to Buenos Aires, but cooler in the summer.  Cooler than Osaka, but more variable.  About as variable as Los Angeles, but generally cooler.  Warmer than Los Angeles, but not as variable.  none of these  What if Sydney\'s climate were equally as variable as Osak\'s? Rewrite the function for Sydney to account for this new variability, and complete the missing values in the table. Give temperatures to the nearest tenth of a degree.   
  
  Solution
Approach to problem 29 seems fine. and the obtained sinusoidal regression obtained is correct.
However for problem 31 one would need to have Osaka\'s variation of temperature data.

