Question

the function below allows you to convert degrees celsius to degrees fahrenheit. use this function to convert 30 degrees celsius to degrees fahrenheit.
f(c)=\frac{9}{5}c + 32
30°c = ____ °f
a. 54
b. 30
c. 112
d. 86

Explanation:

Step1: Substitute value of c

Substitute $c = 30$ into $F(c)=\frac{9}{5}c + 32$.
$F(30)=\frac{9}{5}\times30+32$

Step2: Calculate multiplication part

$\frac{9}{5}\times30=9\times6 = 54$.
So $F(30)=54 + 32$.

Step3: Calculate addition part

$54+32=86$.

Answer:

D. 86