A community college foundation is conducting its annual fund drive. The money collected over the first 6 weeks is shown in this graph. If n represents the number of weeks, which function is the best fit for the data in the graph? f(n) = 4000n f(n) = 2000n + 10,000 f(n) = 10,000n -12,000 f(n) = 10,000n + 2000