Evaluate each sum that exists.
(a) $\sum_{i=1}^{25}(5-4 i)$
(b) $\sum_{i=1}^{6} \frac{3}{4}(2)^{i}$
(c) $\sum_{i=1}^{\infty} 2\left(\frac{3}{4}\right)^{i}$
(d) $\sum_{i=1}^{\infty}\left(\frac{4}{3}\right)^{i}$

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The Answer of Evaluate each sum that exists.
(a) $\sum_{i=1}^{25}(5-4 i)$
(b) $\sum_{i=1}^{6} \frac{3}{4}(2)^{i}$
(c) $\sum_{i=1}^{\infty} 2\left(\frac{3}{4}\right)^{i}$
(d) $\sum_{i=1}^{\infty}\left(\frac{4}{3}\right)^{i}$

Evaluate Each Sum That Exists ∑i=125(5−4i)\sum_{i=1}^{25}(5-4 i)∑i=125​(5−4i) (B) ∑i=1634(2)i\sum_{i=1}^{6} \frac{3}{4}(2)^{i}∑i=16​43​(2)i (C) ∑i=1∞2(34)i\sum_{i=1}^{\infty} 2\left(\frac{3}{4}\right)^{i}∑i=1∞​2(43​)i

Evaluate Each Sum That Exists $\sum_{i=1}^{25}(5-4 i)$ (B) $\sum_{i=1}^{6} \frac{3}{4}(2)^{i}$ (C) $\sum_{i=1}^{\infty} 2\left(\frac{3}{4}\right)^{i}$