2 years ago

30 points!! What is the sum of this series?

1 answer:

5 0

Answer:

$Sum=95$

Step-by-step explanation:

$S=\sum_{n=4}^8 (2n+7)\\\\Expand\ the\ Series\\\\S=(2\times 4+7)+(2\times 5+7)+(2\times 6+7)+(2\times 7+7)+(2\times 8+7)\\\\S=15+17+19+21+23\\\\S=95$

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