The given graph shows the temperature Tin °F at a city between 6 A.M. and 6 PM. 80 70- 60- 50- 40+ 0 3 6 9AM 12 NOON Time(hrs) Answer parts (a) through (c) 6AM 9 3 PM 12 Q 6 PM i) Which of the following is the rate of temperature change at 7 A.M? O -11.9 °F/hr 11.9 °F/hr ii) Which of the following is the rate of temperature change at 9 A.M? O -2.9 °F/hr O - 12.9 °F/hr ii) Which of the following is the rate of temperature change at 2 P.M? -3.3 °F/hr - 13.3 °F/hr O O iv) Which of the following is the rate of temperature change at 4 PM? O 12.9 °F/hr O O2.9 °F/hr O O 1.9 °F/hr -1.9 °F/hr O O 3.3 °F/hr 13.3 °F/hr O 0.9 °F/hr O -0.9 °F/hr (b) At what time does the temperature increase most rapidly? Decrease most rapidly? What is the rate for each of those times? OA. The temperature increases most rapidly at 6 P.M. and the rate is 19.1 °F/hr, and the temperature decreases most rapidly at 12 Noon and the rate is 24.1 °F/hr. 12.1 °F/hr - 12.1 °F/hr OB. The temperature increases most rapidly at 12 Noon and the rate is 19.1 °F/hr, and the temperature decreases most rapidly at 6 P.M.and the rate is -24.1°F/hr. OC. The temperature increases most rapidly at 12 Noon and the rate is 4.1 °F/hr, and the temperature decreases most rapidly at 6 P.M. and the rate is -9.1 °F/hr.

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