What is the equivalent of 15°C in Fahrenheit?

To convert Celsius to Fahrenheit, the formula used is:

[ F = (C \times \frac{9}{5}) + 32 ]

In this case, substituting 15 for Celsius gives:

[ F = (15 \times \frac{9}{5}) + 32 ]

First, multiplying 15 by ( \frac{9}{5} ) results in:

[ 15 \times 1.8 = 27 ]

Next, adding 32 to this product:

[ 27 + 32 = 59 ]

Thus, 15°C is equivalent to 59°F. This is why the correct answer is 59°F. Each conversion step aligns properly with the established formula, ensuring the accuracy of the transformation from Celsius to Fahrenheit.