Let's follow the steps for finding the inverse of each function you provided.

1. $f(x) = (x + 3)^3$

Step 1: Replace $f(x)$ with $y$: $y = (x + 3)^3$

Step 2: Interchange $x$ and $y$: $x = (y + 3)^3$

Step 3: Solve for $y$: $\sqrt[3]{x} = y + 3$ $y = \sqrt[3]{x} - 3$

Step 4: Replace $y$ with $f^{-1}(x)$: $f^{-1}(x) = \sqrt[3]{x} - 3$

2. $f(x) = \frac{1}{2}x + 4$

Step 1: Replace $f(x)$ with $y$: [ y = \frac{