CPM Homework Help : INT3 Problem 10-193

What is the sum of the infinite series $324 + 54 + 9 + 1.5+ ...$ ?

Hint:

Find the common ratio:

$\frac{54}{324}=\frac{1}{6}$

$\frac{9}{54}=\frac{1}{6}$

More Help:

Use the equation for an infinite geometric series:

$\displaystyle\sum_{n=100}^{\infty}{ar^{n-1}}=\frac{a}{1-r}$