The student council is playing a spring celebration. Unfortunately, to rent a hall for event, they will need to pay a deposit in advance of the event. Since they have not started selling tickets yet, they asked the parent-teacher association for a loan of $825 for the hall rental. The PTA agreed, but said it would charge 2% simple interest each week until the loan is paid back.
Ms. Becker, the student council adviser, explained to the students that the amount of the loan ($825) is called the principal amount. Until the loan is paid back, 2% (called the weekly interest rate) of the principal amount will be added each week to the amount owed.

a. How much money in interest will the PTA charge each week?
b. If the student council borrows $835, how much will it owe after 1 week? after 3 weeks?
c. How much would the student council owe two months (8 weeks) from now?