Solve the problem.A small boy's temperature rose and fell over the course of one day. At 7am, it rose 1.0 degrees. At noon, it fell 2.6 degrees. At 4pm, it fell 1.7 degrees. Finally, at 8pm, it rose 3.7 degrees. What was the net change in the boy's temperature over the course of the day?
A. -1.6
B. 3.8
C. 0.4
D. 9
Answer: C
Mathematics
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