Problem 3: In the graph below, the monthly average temperature in degrees Fahrenheit from January to December in a city is modeled by a function T(t), where t = 1 corresponds to January and t = 12 corresponds to December. Temperature (degrees Fahrenheit) 90- 80- 70- 60- 50- 40- 30- 20- 10- 0- 0 y 2 4 6 Month -∞o 8 a. Find and interpret T(4). b. For what t-values was the temperature increasing? c. For what t-values was the temperature decreasing? 10 12 d. Identify the absolute maximum and interpret what it means. e. Identify the absolute minimum and interpret what it means.

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Q: () |=0, x-intercept -2 (order 3) and f(-1)=-4 b. quintic f(-4)= f -4

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