Answer :
To convert 20 degrees Celsius to degrees Fahrenheit, you can use the function or formula given:
[tex]\[ F(c) = \frac{9}{5} \times c + 32 \][/tex]
where [tex]\( c \)[/tex] is the temperature in degrees Celsius, and [tex]\( F(c) \)[/tex] is the temperature in degrees Fahrenheit.
Here are the steps to solve the problem:
1. Substitute 20 for [tex]\( c \)[/tex] in the formula.
[tex]\[ F(20) = \frac{9}{5} \times 20 + 32 \][/tex]
2. Multiply [tex]\(\frac{9}{5}\)[/tex] by 20.
[tex]\[ F(20) = 36 + 32 \][/tex]
3. Add 32 to the result.
[tex]\[ F(20) = 68 \][/tex]
Thus, 20 degrees Celsius is equal to 68 degrees Fahrenheit. Therefore, the correct answer is:
A. 68
[tex]\[ F(c) = \frac{9}{5} \times c + 32 \][/tex]
where [tex]\( c \)[/tex] is the temperature in degrees Celsius, and [tex]\( F(c) \)[/tex] is the temperature in degrees Fahrenheit.
Here are the steps to solve the problem:
1. Substitute 20 for [tex]\( c \)[/tex] in the formula.
[tex]\[ F(20) = \frac{9}{5} \times 20 + 32 \][/tex]
2. Multiply [tex]\(\frac{9}{5}\)[/tex] by 20.
[tex]\[ F(20) = 36 + 32 \][/tex]
3. Add 32 to the result.
[tex]\[ F(20) = 68 \][/tex]
Thus, 20 degrees Celsius is equal to 68 degrees Fahrenheit. Therefore, the correct answer is:
A. 68
