You purchase a house and obtain a $20-$year loan of $$194,000$ at an annual interest rate of $8\mathrm{.}40\%.($Round your answers to the nearest cent.$)$

$($a$)$ What is the mortgage payment?

$

Incorrect: Your answer is incorrect.

$($b$)$ What is the total of the payments over the life of the loan?

$

Incorrect: Your answer is incorrect.

$($c$)$ Find the amount of interest paid on the mortgage loan over the $20$ years.

$