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A Question 1 (1 point) Retake question
Firing a piece of pottery in a kiln takes place at different temperatures for different
amounts of time. The graph below shows the temperatures in a kiln while firing a
piece of pottery after the kiln is preheated to 200°F.
Temperature (°F)
1600-
1200-
800-
400-
(2.5.1300)
(1.5,900)
(1,700)
(5,1640)
2.5 to 5 hours
1 hour to 1.5 hours
0 to 1 hour
5 hours to 8 hours
(8,1800)
Time (hours)
8
4
During which time interval did the temperature in the kiln show the smallest average
rate of change?