There are 120 athletes at a meeting. They
each give a Valentine's Day card to
everyone else. How many cards were
given?
A) Permutation; 2,856
B) Permutation; 14,280
C) Combination; 7,140
D) Permutation; 4,760

Abank manager wants to encourage new customers to open accounts with principals of at least $2 comma 500. he decides to make a poster advertising a simple interest rate of 3%. what must the principal be if the bank manager also wants to advertise that one can earn $10 the first month? can the poster correctly say, "open an account of $2 comma 500 and earn at least $10 interest in 1 month! "?