Chapter 8.3, Problem 95E

(a)

To determine

To graph: The function $y=\frac{1-r^x}{1-r}$ for $r=\frac{1}{2},\frac{2}{3}\text{ and }\frac{4}{5}$. Also, determine the function $y=\frac{1-r^x}{1-r}$ when $x\to \infty$.

(b)

To determine

To graph: The function $y=\frac{1-r^x}{1-r}$ for $r=1.5,2\text{ and 3}$. Also, determine the function $y=\frac{1-r^x}{1-r}$ when $x\to \infty$.