Question

What are the first five partial sums of the arithmetic series: an = 0.05(n - 1) - 0.6?
(Points : 1)
-0.6, -0.55, -0.5, -0.45, -0.4

- 0.6, -1.15,- 1.65, -2.1, -2.5

-0.6, -1.15, -1.05, -0.95, -0.85

- 0.6, 1.15, -1.65, 2.1, -2.5

Answer 1

@whpalmer4

Answer 2

I am thinking that the answer is C

Answer 3

Well, you're in the English section.. You may not get much help. Try posting it in the Mathematics section.

Answer 4

The first five partial sums are
\[a_1,~ a_1+a_2, ~a_1+a_2+a_3, ~a_1+a_2+a_3+a_4, ~a_1+a_2+a_3+a_4+a_5\]