Answer
$W^{-1}(x) = \frac{x-3.7}{2.4}$
Work Step by Step
$W(x) = 2.4x + 3.7$
Let $W(x) = y$:
$y = 2.4x + 3.7$.
Switch the variables $x$ and $y$ to find the inverse and solve for $y$:
$x = 2.4y + 3.7$
$x - 3.7 = 2.4y$
$y = \frac{x-3.7}{2.4}$
$W^{-1}(x) = \frac{x-3.7}{2.4}$.
