Thomas bought his whole family hot dogs and popcorn at the baseball game. He bought 60 items. He bought 3 hot dogs and and 8 popcorn. How much did it cost for a hot dog and for popcorn ?

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! "?