Question

Please answer i will give you

Answer 1

Answer: C) $f^{-1}(x)=3-7x$

Step-by-step explanation:

When solving for an inverse of a function replace f(x) with x and replace the original x with y.

$f(x) = \frac{3-x}{7} \\x=\frac{3-y}{7}$

Now solve for y

$x=\frac{3-y}{7} \\(7)x=(\frac{3-y}{7}) (7)\\7x=3-y\\7x+y=3-y+y\\7x+y=3\\7x-7x+y=3-7x\\y=3-7x$

Replace y with the $f^{-1}(x)$