Q108. You are a small non-profit. Your sole funder says that each year it will double what you have as your balance at the end of the year. Each year you project spending 20,000 for programs. Ignore interest. Write difference equations describing your balance (B).

What special situations can you imagine we might get into? What, for example, happens if B0=$32,000? What happens if it is 50,000? 40,000?