Question

The formula below can be used to convert
temperatures in degrees Fahrenheit, F, to
temperatures in degrees Celsius, C.
C = 5/9
(F − 32)
On a certain day temperatures at the North
Pole were between −20°F and −15°F. Which of
these is a reasonable temperature in degrees
Celsius for that day at the North Pole?
F −30°C
G −22°C
H −27°C
J −11°C

Answer 1

it's -27 according to my calculations...

Answer 2

first i i took the function to be C(f)=5/9(f-32) then made my domain \[-20\le F \le -15\]

Answer 3

i checked the values, i got: C(-20)=-28.889
and C(-15)=-26.111

The only value that they give which lies between -28.889 and -26.111, is H: -27.

Answer 4

thank you

Answer 5

your welcome! :)