$$\text { Find } \sum _ { j = 1 } ^ { 100 } 2 j + 5 \text { and } \sum _ { j = 5 } ^ { 100 } 3 ^ { j }$$

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The Answer of $$\text { Find } \sum _ { j = 1 } ^ { 100 } 2 j + 5 \text { and } \sum _ { j = 5 } ^ { 100 } 3 ^ { j }$$

$\text { Find } \sum _ { j = 1 } ^ { 100 } 2 j + 5 \text { and } \sum _ { j = 5 } ^ { 100 } 3 ^ { j }$