Use the ratio test to determine whether the series is convergent or divergent. ∞ 2 · 4 · 6 · · (2n) n! n = 1

A group of environmentalists were discussing the benefits and drawbacks associated with using fossil fuels. Which argument best fits the conversation? 
Fossil fuels are cheaper than alternative forms of energy.Fossil fuel reserves will never be depleted.Fossil fuels are easily renewed. Fossil fuel use does not affect the environment.

After 9 years:

7,680

Step-by-step explanation:

4%=0.04

1 year = 12,000 x 0.04=480

9 years= 480 x 9 = 4320

12,000-4320= 7,680