Please solve tax accounting problem below

Dawn Hewlett maintains a specialized clientele for whom she performs various services, among which are the sourcing of, and sale to them of, handcrafted artifacts from various parts of the Caribbean. At the end of her first year, she disclosed the selected financial information for her business below.

Identify the effect of each transaction on her taxable business income.

1. She signed a contract to sell certain artifacts from St. Croix to an entity in Texas on the condition that after examining them, an expert team certifies them as genuine.On December 15^th 2018, she delivers under the contract, artifacts for $20,000 which cost $14,000.The earliest that the artifacts can be examined is March 15^th 2019.
2. Also in December, she paid $6,000 to rent a vital piece of equipment for a three-month period and returned the equipment in March at end of the lease term although she had no further use for the equipment by year end.