Which summation formula represents the series below? 5 + 7 + 9 + 11

Summation formula will be

Step-by-step explanation:

The given series is 5 + 7 + 9 + 11

As we can see that terms given in the series are having a common difference d = 7 - 5 = 2

Explicit formula of an arithmetic sequence is

Where = first term of the sequence

n = number of term

d = common difference of the the terms

Now we put the values of a and d in the explicit formula

Therefore in the summation notation formula will be

Therefore the answer is

step-by-step explanation:

well if you round, things become much more simple. round 5.95 to 6, 4.25 to 4, and 1.05 to 1. now, add 6+4+1 and that would equal 11. so the items together would equal to about $11.