Steven wants to buy a $500 bicycle Steven has no money saved but will be able to deposit $45 into a savings account when he received his paycheck each Friday however before Stephen can buy the bike he must give his sister $85 that he owes her for how many weeks will Steven need to deposit money into a savings account before he could pay back his sister and by the bike?
A. 13 weeks
B. 15 weeks
C. 17 weeks
D. 11 weeks