during science class, jimmy heated a substance and recorded the temperature of the substance over several…

during science class, jimmy heated a substance and recorded the temperature of the substance over several minutes. he used the data to make the graph shown. what was the temperature of the substance when he started his experiment? a. -21 °c b. -18 °c c. 0 °c d. 3 °c e. 6 °c
Answer
Explanation:
Step1: Identify starting - time on graph
The experiment starts at time (t = 0) minutes.
Step2: Find corresponding temperature
On the graph, when (t = 0), the temperature is (- 18^{\circ}C).
Answer:
B. (-18^{\circ}C)