3. You are biking at a speed of 18 miles per hour. You are 3 miles behind your friend who is bikin at a speed of 12 miles
per hour. Write and solve an equation to find the time it takes
for you to catch up to your friend. Make sure to include the
correct units in your answer.

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! "?