I need help with these questions

1) Art Supplies has a net income of $138,600. The firm has $1.25 million in assets and $500,000 in liabilities. What is the return on equity?

2) A bond has a dollar value of an 01 of .0684. What is the yield value of a 32nd?

3) A Treasury bill has a face value of $75,000, an asked yield of 3.05 percent, and matures in 35 days. What is the price of this bill?

4) A 5.5 percent coupon bond has a face value of $1,000 and a current yield of 5.64 percent. What is the current market price?

5) Yesterday, the DJIA closed at 12,309.16. The divisor is 0.123017848. Today, every one of the stocks in the index increased in value by $0.40 a share. What is the value of today's closing DJIA?

I need help with these questions, please.