Does anybody know how to solve this ?

Suppose investors can earn a return of 2% per 6 months on a treasury note with 6 months remaining until maturity. the face value of the t-bill is $10,000. what price would you expect a 6-month maturity treasury bill to sell for? (round your answer to 2 decimal places. omit the "$" sign in your response.)

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

Could somebody me with this radical simplification?