If a refrigerant temperature chart uses Celsius and 4°C equals 39.2°F, what is the Fahrenheit equivalent?

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Multiple Choice

If a refrigerant temperature chart uses Celsius and 4°C equals 39.2°F, what is the Fahrenheit equivalent?

Explanation:
Converting Celsius to Fahrenheit is what's being tested. Use F = C × 9/5 + 32. For 4°C, F = 4 × 9/5 + 32 = 7.2 + 32 = 39.2°F. So the Fahrenheit equivalent is 39.2°F. The other numbers don’t fit because they come from different Celsius values or standard reference points (for example, 32°F is 0°C, not 4°C; 43.0°F corresponds to about 6°C; 4°F would be much colder and not equal to 4°C).

Converting Celsius to Fahrenheit is what's being tested. Use F = C × 9/5 + 32. For 4°C, F = 4 × 9/5 + 32 = 7.2 + 32 = 39.2°F. So the Fahrenheit equivalent is 39.2°F. The other numbers don’t fit because they come from different Celsius values or standard reference points (for example, 32°F is 0°C, not 4°C; 43.0°F corresponds to about 6°C; 4°F would be much colder and not equal to 4°C).

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