with calculation ( Samples picture 2nd and 3rd )

The followings are the merchandise transactions happened under perpetual inventory system: 1. Apr 2 , business bought $5,100 inventory from the GE Inc. Term 1/5,n/30 FOB 2. Apr3. Business paid $146 shipping charges for the inventory purchased on Apr2 3. Apr5, business bought $2,730 inventory from Jimmy's Inc. paid in Cash 4. Apr6, Business purchased $3,700 inventory from Epc's Inc. Term 2/10, n/30 FOB 5. Apr10, business found $210 defective units from the Apr6 purchase, returned them back to Epc's Inc. 6. Apr10 business paid GE Inc in full 7. Apr 25, Business paid Epc's Inc in full 8. Instead of paying Epc's Inc on Apr25, What would be the entry if the business was paying Epc's Inc on Apr16. Please make entries for the above transactions. If there is any calculation related entry, please also show the detailed calculations