Question

Sam takes a job with a starting salary of $50,000 for the first year. He earns a 4% increase each ear. Which expression gives the partial sum, S3, (in thousands)?

Answer 1

The sum = 50 + 50 * 1.04 + 50 * 1.04²

              = 50 * 1.04⁰ + 50 * 1.04 + 50 * 1.04²

  Which is agree with ∑ 50 (1.04)^(n-1)

The correct answer is the first picture.