Question

what will the temperature be in degrees Fahrenheit when it is 40° outside use the formula f equals (9 C / 5) + 32

Answer 1

To convert temperature from C to F we will use the formula (that you have also given).

$f\text{ = }\frac{9C}{5}+32$

here C = 40, so we have to plug it in the formula, and we will get the answer.

$f\text{ = }\frac{9(40)}{5}+32=104$

There you have it, that is the answer!