Chapter 11.9, Problem 33E

Work the following exercises.

First-Class Postage The accompanying table shows the cost $C\left(x\right)$ (in dollars) of mailing a first-class letter weighing x ounces domestically on January 1, 2017. (Data from: www.usps.gov.)

Weight not over (ounces)	Price ($)
1	0.47
2	0.68
3	0.89
3.5	1.10

sketch a graph of $\text{y=C}\left(\text{x}\right)$ on the interval [0, 3.5].

$\underset{\text{x}\to {\text{1}}^{-}}{\text{lim}}\text{C}\left(\text{x}\right)$

$\underset{\text{x}\to {\text{1}}^{+}}{\text{lim}}\text{C}\left(\text{x}\right)$

$\underset{\text{x}\to \text{1}}{\text{lim}}\text{C}\left(\text{x}\right)$

$\underset{\text{x}\to {2.5}^{-}}{\text{lim}}\text{C}\left(\text{x}\right)$

$\underset{\text{x}\to {2.5}^{+}}{\text{lim}}\text{C}\left(\text{x}\right)$

$\underset{\text{x}\to 2.5}{\text{lim}}\text{C}\left(\text{x}\right)$

Find all values on the interval (0,3.5) where x is discontinuous.