If$\sum _ { k = 1 } ^ { \infty } a _ { k } = - 4 \text { and } \sum _ { k = 1 } ^ { \infty } b _ { k } = 9 \text {, find } \sum _ { k = 1 } ^ { \infty } \left( 9 a _ { k } - 2 b _ { k } \right)$

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The Answer of If$\sum _ { k = 1 } ^ { \infty } a _ { k } = - 4 \text { and } \sum _ { k = 1 } ^ { \infty } b _ { k } = 9 \text {, find } \sum _ { k = 1 } ^ { \infty } \left( 9 a _ { k } - 2 b _ { k } \right)$

If A)18
B)-54
C)-13
D)-18

Definitions:

If A)18 B)-54 C)-13 D)-18

Definitions:

If A)18
B)-54
C)-13
D)-18