Prepare journal entries for the issuance of the following bonds. (Treat each issue seperate)

On April 1, 2015, the company issued 1,300 bonds, each with a face value of $1,000. The bonds have a coupon rate of 4%, due semi-annually on September 30^th and March 31^st of each year. The bonds mature on March 31, 2020. Investors expect a yield of 6% for similar bonds.

On June 1, 2016, the company issued 2,300 bonds, each with a face value of $1,000. The bonds have a coupon rate of 7%, due semi-annually on November 30^th and May 31^st of each year. The bonds mature on May 31, 2024. The yield for similar bonds is 4%.

On October 1, 2014, the company issued 1,000 bonds, each with a face value of $1,000. The bonds have no stated interest rate and do not require any interest payments. The bonds mature on September 30, 2019. The bonds are sold at a price that yields 4%.

please and explain how you get your journal. I believe mine are incorrect.