Question

Find the sum of the infinite series, if it exists. 100+20+4+… And please show work

Answer 1

Answer:

Step-by-step explanation:

r=20/100=0.2<|1|

$S_{\infty} =\frac{a_{1}}{1-r} \\=\frac{100}{1-0.2} =\frac{100}{0.8} =125$