Answer:
$1184.04
Explanation:
To pay off the $10,000 in 4 years, Adam will have to make a minimum payment of $239.46 per month.
So, the total amount that Adam has to pay back within 4 years with interest = $(239.46 × 4 × 12) = $11494.08
Again, to pay off the $10,000 in 7 years, Adam will have to make a minimum payment of $150.93 per month.
So, the total amount that Adam has to pay back within 7 years with interest = $(150.93 × 7 × 12) = $12678.12
Therefore, Adam has to pay $(12678.12 - 11494.08) = $1184.04 more interest when the length of the loan changes from 4 years to 7 years. (Answer)