Josephine needs to borrow $180,000 to purchase her new house in Yarmouth, Nova Scotia

Josephine needs
to borrow $180,000 to purchase her new house in Yarmouth, Nova Scotia.
She would like to pay off the mortgage in 20 years, making monthly payments. For
the initial three-year term, Providence Bank has offered her a quoted annual
rate of 6.40 percent.
A. What is the effective annual interest
rate?
B. What is the
effective monthly interest rate?
C. How much
will Josephines monthly mortgage payments be?