Answer:
Sure, let's calculate it step by step:
1. **Down payment:**
\[15\% \text{ of } $2,900 = 0.15 \times $2,900 = $435\]
So, Ruben's down payment is $435.
2. **Total cost of the camera after the down payment:**
\[$2,900 - $435 = $2,465\]
3. **Finance charges:**
\[$2,465 (total cost after down payment) - $2,900 (original price) = -$435\]
Ruben will actually pay $435 less in finance charges, which is a benefit for him.
4. **Total amount paid over 12 months:**
\[12 \text{ monthly payments of } $250 + $435 \text{ down payment} = 12 \times $250 + $435\]
Let me calculate the final total for you.