ACT Science
Interpretation of Data
A scientist measures the temperature of a solution every 5 minutes. At 10 minutes, the temperature is C. At 20 minutes, it is C. Assuming a linear relationship, what was the temperature at 0 minutes?
Options:
C
C
C
C
Explanation
Correct Answer: $15^{\circ}$C
The temperature increases by C in 10 minutes (from 10 to 20 mins), which means the rate of change is C per minute. To find the temperature at 0 minutes, we can go back 10 minutes from the first measurement. 10 minutes * C/minute = C change. So, C - C = C.
The temperature increases by C in 10 minutes (from 10 to 20 mins), which means the rate of change is C per minute. To find the temperature at 0 minutes, we can go back 10 minutes from the first measurement. 10 minutes * C/minute = C change. So, C - C = C.
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