Question

What are the first five partial sums of the arithmetic sequence: an = 0.05(n – 1) – 0.6?

–0.6, –0.55, –0.5, –0.45, –0.4


–0.6, –1.15, –1.05, –0.95, –0.85


–0.6, 1.15, –1.65, 2.1, –2.5


–0.6, –1.15, –1.65, –2.1, –2.5