formula for converting celcius to fahrenheit: F=9/5C+32

Question

a) what is the inverse of the function?
b)use the inverse to find the celcius tempertature that corresponds to 25F

Please help i have no idea how to solve this :(

Answer 1

Just solve for C:

F = 9/5 C + 32
F-32 = 9/5 C
C = 5/9 (F-32)

so, 25F = 5/9*(25-32) = -3.9C

Answer 2

This is wrong answer