Prepare journal entries to record the following merchandising transactions of Margin Company, Inc., which uses the gross method of accounting for purchases and sales and a perpetual inventory system. Margin Company, Inc. offers all of its credit customers credit terms of 2/10, n/30. 
Definitions:
Calcium Hydroxyapatite
A mineral form of calcium apatite with the formula Ca5(PO4)3(OH), which is the main structural element found in bone and teeth.
Bone Matrix
Bone matrix is the intercellular substance of bone tissue, consisting of collagen fibers and a mineralized ground substance that provides strength.
Osteogenesis Imperfecta
A genetic disorder characterized by fragile bones that break easily, also known as brittle bone disease.
Brittle Bone
Also known as osteogenesis imperfecta, a genetic disorder characterized by bones that break easily due to a collagen defect.
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