For this case we have the following function: f (c) = (9/5) c + 32 Substituting the value of c = 20 we have: f (20) = (9/5) (20) + 32 Rewriting we have: f (20) = (9) (4) + 32 f (20) = 36 + 32 f (20) = 68 Answer: The conversion for this case is given by: f (20) = 68 option A
