1 Melody performed research for an engineering class in college. She took a sample of metal from
a liquid nitrogen bath and placed it in a special oven. She then measured the temperature of
the metal. The table shows the data Melody collected at different times.
Time
(min.)
4
Temperature
(°F)
-100
160
420
8
12
What is the rate of change in the temperature of Melody's metal sample?
A
B
-25 °F/min.
40 °F/min
65 °F/min.
260 °F/min
С
D