Use the formulas below to answer the question. Round your answer to the nearest tenth if necessary.C = 
(F - 32) or C = 
F = 
C + 32 or F = 1.8C + 32.When the temperature is below 18°F the first grade students are not allowed to play outside. What is this temperature in degrees Celsius?
A. 0.4°C
B. -7.8°C
C. 64.4°C
D. 22.0°C
Answer: B
Mathematics
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