Help!! I have no idea how to do this. :(

The difference between tax advoidance and tax evasion

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists