EMERGENCY. Please give me the correct answer.

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.)

The value √10 and √15 are plotted on the number line

Given: ab ≅ bc and ao ≅ oc ok − angle bisector of ∠boc find: m∠aok