Use a graphing calculator to evaluate the sum. Round to the nearest thousandth.
-$$\sum _ { k = 5 } ^ { 12 } ( 1.79 ) ^ { k }$$
A) 2410.034
B) 2428.410
C) 1328.011
D) 1346.387

Question

Quizplus · Accepted Answer

To evaluate the sum $\sum _ { k = 5 } ^ { 12 } ( 1.79 ) ^ { k }$, you can use the sequence mode or a summation feature on a graphing calculator. Inputting the given expression and summing from $k = 5$ to $k = 12$, the result is approximately 2428.410, rounded to the nearest thousandth.

Use a Graphing Calculator to Evaluate the Sum ∑k=512(1.79)k\sum _ { k = 5 } ^ { 12 } ( 1.79 ) ^ { k }k=5∑12​(1.79)k

Use a Graphing Calculator to Evaluate the Sum $\sum _ { k = 5 } ^ { 12 } ( 1.79 ) ^ { k }$