Answer:
Option C is the answer.
Step-by-step explanation:
Given arithmetic series is 2.3 + 2.6 +2.9 + ......... 5 terms
Since this series is an arithmetic series so explicit formula of series will be [tex]\sum_{n=1}^{n}[a+(n-1)d][/tex] where a is the first term, d is the common difference and n is the number of term.
Therefore, we replace the values a = 2.3, and d = (2.6 - 2.3) = (0.3)
expression will be [tex]\sum_{n=1}^{n}[2.3+(n-1)(0.3)][/tex]
[tex]\sum_{n=1}^{n}[2.3+(0.3)n-0.3][/tex]
[tex]\sum_{n=1}^{n}[2+(0.3)n][/tex]
Option C is the answer.
