This is Accrual Accounting . If you do a job in Week 1 but get paid in Week 4, you record the revenue in Week 1. Finance cares about timing , which is why we also look at the Statement of Cash Flows.
Below are common questions and core concepts covered in the Week 1 assessments based on educational resources like Course Hero Core Concepts Covered Time Value of Money (TVM): coursera fundamentals of finance quiz answers week 1