Use a graphing calculator to evaluate the sum. Round to the nearest thousandth.
-$$\sum _ { i = 2 } ^ { 9 } - 2 ( 0.93 ) i$$
A) $- 10.883$
B) $- 9.154$
C) $5.442$
D) $- 9.843$

Question

Quizplus · Accepted Answer

The sum can be calculated by inputting the expression $-2(0.93)i$ into a graphing calculator and summing from $i = 2$ to $i = 9$. The result is $-10.883$, rounded to the nearest thousandth.

Use a Graphing Calculator to Evaluate the Sum ∑i=29−2(0.93)i\sum _ { i = 2 } ^ { 9 } - 2 ( 0.93 ) ii=2∑9​−2(0.93)i

Use a Graphing Calculator to Evaluate the Sum $\sum _ { i = 2 } ^ { 9 } - 2 ( 0.93 ) i$