4 3/8 is what I believe to be the answer.<span />
If you think of the equation as an equation for a line.
y=mx+b
y
=
m
x
+
b
where
C=5/9(F−32)
C
=
5
/
9
(
F
−
32
)
or
C=5/9F−5/9(32)
Answer:

(f-g)(-4) = -151
Step-by-step explanation:
To find f-g(x) we subtract the common terms. So


(f-g)(x)

(f-g)(-4)

We replace x by -4

(f-g)(-4) = -151