Final answer:
The total amount paid for the 30-year mortgage loan at 4.5% APR is $912,480, and the portion of that amount which is interest comes to $412,480.
Step-by-step explanation:
The question involves calculating the total amount paid on a 30-year home mortgage loan and the amount of that total which constitutes interest. For a mortgage of $500,000 with a 4.5% APR, the monthly principal and interest payment is given as $2,533.
To find the total amount paid over 30 years, you multiply the monthly payment by the number of months in 30 years (30 years * 12 months/year = 360 months). So, $2,533 * 360 months = $912,480. Therefore, the total amount paid in 30 years would be $912,480, which makes option A correct for part (a).
For part (b), to find out how much of the total was interest, subtract the original loan amount from the total amount paid. $912,480 total paid - $500,000 original loan amount gives us $412,480 in interest. So, the correct answer for part (b) is option C.