Answer:
B
Step-by-step explanation:
<u>The question is on inverse of functions</u>
f(x)=2x-9 -----------to find f ⁻(x)
<u>replace f(x) with y;</u>
f(x)=2x-9----------------y=2x-9
<u>replace y with x and x with y</u>
y=2x-9------------------x=2y-9
<u>solve for y</u>
x=2y-9
x+9=2y
(x+9)/2 =y
<u>replace y with g(x) or f ⁻(x)</u>
g(x)=x+9 /2