A landscaping company charges 6 cents per square foot to apply fertilizer. How much would it cost for them to fertilize a 27 ft. x 44 ft. lawn?

Connie loaned Sam $2,500 at a yearly interest rate of 9%. After one year how much will Sam owe Connie?

What are the next two numbers in this series:
{3, 9, 5, 15, 11, ?, ?}