1. **State the problem:** Jina rented 1 video game and 3 DVDs. The video game rental costs $3.40 and each DVD rental costs $4.30. We need to find the total amount Jina spent. 2. **Formula:** Total cost = (Number of video games \times Price per video game) + (Number of DVDs \times Price per DVD) 3. **Substitute values:** $$\text{Total cost} = (1 \times 3.40) + (3 \times 4.30)$$ 4. **Calculate each part:** $$1 \times 3.40 = 3.40$$ $$3 \times 4.30 = 12.90$$ 5. **Add the amounts:** $$3.40 + 12.90 = 16.30$$ 6. **Answer:** Jina spent a total of $16.30 on rentals in the past month.