Please help me complete this!

I have been struggling for a while, and mainly I need the answer.

Thank you!

Q.7 (5 points) You have just purchased a new warehouse. To finance the purchase, you've arranged for a 30-year mortgage loan for 80 percent of the $3,000,000 purchase price. The monthly payment on this loan will be $14,000 starting 1 month from today. a) What is the periodic rate on this loan? b) What is the nominal rate of this loan? c) What is the effective rate on this loan