In Buenos Aires, Argentina, the average monthly temperature is highest in January and lowest in July, ranging from 83 degrees Fahrenheit to 57 degrees Fahrenheit. Write a cosine function that models the change in temperature according to the month of the year.
-How can you find the amplitude?
-What part of the problem describes the length of the cycles?

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13 is definitely the amplitude and y = 70 is the midline

what is the period or length of each cycle?

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