Evaluate the sum.
-$$\sum _ { i = 4 } ^ { 12 } ( i + 7 )$$
A) 135
B) 123
C) 131
D) 119

Name: Evaluate the sum. -\[\sum _ { i = 4 } ^ { 12 } ( i + 7 )\] A) 135 B) 123 C) 131 D) 119
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Question

Quizplus · Accepted Answer

The sum can be calculated directly by evaluating each term in the series and adding them together. The series is: (4+7) + (5+7) + (6+7) + (7+7) + (8+7) + (9+7) + (10+7) + (11+7) + (12+7). Simplifying each term gives 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 19, which sums up to 135.

Evaluate the Sum ∑i=412(i+7)\sum _ { i = 4 } ^ { 12 } ( i + 7 )i=4∑12​(i+7)

Evaluate the Sum $\sum _ { i = 4 } ^ { 12 } ( i + 7 )$