in year 4 i believe

Brandon buys a piece of equipment for $15,000. He pays $5,000 for upgrades in year and the equipment generates $2,000 in cash flow for year 1. In year 2 the equipment generates $8,000, year 3 it generates $4,000, but Brandon sells it for $6,000 but also pays a $500 commission. Assume a required rate of return of 9%. What is the NPV? -3,378. 3,378. 0-3683. 3683