To solve this car loan problem, let's go through each part step-by-step.

Given Information

• Car price: $6,698
• Down payment: $798
• Monthly payment: $161.51
• Number of monthly payments: 48

Steps to Solve

Part (a): Total Amount to be Paid

The total amount paid over the life of the loan includes the down payment and all monthly payments.

$\text{Total amount to be paid} = \text{Down payment} + (\text{Monthly payment} \times \text{Number of payments})$

Substitute the values: $\text{Total amount to be paid} = 798 + (161.51 \times 48)$

Part (b): Amount of Interest

The interest paid is the difference between the total amount paid and the original car price.

$\text{Interest} = \text{Total amount to be paid} - \text{Car price}$

Part (c): Interest Rate (Annual Interest Rate)

To calculate the interest rate, we would generally use a formula for loans, but in this case, since we don’t have explicit information about the compounding, we can approximate the interest rate with the formula for monthly interest. The formula involves more steps and could use financial software for precise results.

Part (d): APR (Annual Percentage Rate)

The APR includes the interest rate calculated annually but rounded to the nearest tenth of a percent.

I'll proceed with the calculations and return with the values.### Calculations Results

1. Total Amount to be Paid: $8,550.48
2. Amount of Interest: $1,852.48

Next, let's approximate the interest rate (c) and APR (d).

To approximate the interest rate, we’ll use the formula for monthly payments on an amortizing loan, then convert it to an annual rate. Let me calculate those.It seems that solving for the exact monthly interest rate symbolically was computationally intensive.

To proceed, I can use an approximate numerical method to determine the monthly interest rate or guide you through using a financial calculator to directly find the APR based on the payment details.

Would you prefer an approximate numerical method or assistance with a financial calculator approach?