Find the indicated partial sum for the given sequence.
-$55 , - 8 , - 11 , - 14 , - 17 , \ldots$
A) $- 23$
B) $- 70$
C) $- 8$
D) $- 40$

Question

Quizplus · Accepted Answer

The first term in the sequence is 55. Each subsequent term is found by subtracting 3 from the previous term. So, the sequence can be written as:
$$55, 55 - 3, 55 - 6, 55 - 9, \ldots$$
To find the partial sum, we need to add up a certain number of terms in the sequence. Let's add up the first 6 terms:
$$55 + (-8) + (-11) + (-14) + (-17) + (-20) = -35$$
Therefore, the partial sum of the first 6 terms is -35. Option B gives the correct answer.

Find the Indicated Partial Sum for the Given Sequence 55,−8,−11,−14,−17,…55 , - 8 , - 11 , - 14 , - 17 , \ldots55,−8,−11,−14,−17,…

Find the Indicated Partial Sum for the Given Sequence $55 , - 8 , - 11 , - 14 , - 17 , \ldots$