Choice Ahoice C is the correct answer. We can model this real-world scenario with a two-step equation.

1. Define variables: Let $x$ be the number of movies.
2. Set up equation: $3x + 10 = 22$ (Cost per movie $\times$ number + monthly fee = total)
3. Subtract 10 from both sides: $3x = 22 - 10$
4. Simplify: $3x = 12$
5. Divide by 3: $x = 4$
6. Verify: $3(4) + 10 = 12 + 10 = 22$ ✓

So, you rented 4 movies.

Choice Ahoice C is incorrect because this results from adding 10 to 22: $32$, then dividing? No, maybe $3x = 32$. Or simply calculating $22 - 10 = 12$ and stopping there.

Choice Ahoice D is incorrect because this might come from calculating $(22+10)/3 \approx 10.6$ or some other error.

Choice Ahoice B is incorrect because this results from adding 10 to 22 ($32$) and not dividing.