Question: What is this sum of the series?

5

∑ 3i

i=1

Answer: 45

Question: What is the sum of the series?

4

∑ (2k^2-4)

k=1

Answer: 44

Question: What is the sum of the series?

6

∑ (-2k+5)

k=3

Answer: -16

Question: Which answer represents the series in sigma notation?

1 + 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64

Answer: 7

∑ (1/2)^j-1

j=1

Question: Which answer represents the series in sigma notation?

−5 + (−1) + 3 + 7 + 11

Answer: 5

∑ (4j-9)

j-1