Find the cost of mailing

Explanation

We will read the number at the intersection of the 9th row and the column labeled Zone 4.  since \(8\frac12\) pounds is more than 8 pounds, we cannot use the 8th row.  Since \(8\frac12\) pounds does not exceed 9 pounds, we use the 9th row of the table.

Solution

The number at the intersection of the 9th row (in red) and the column labeled Zone 4 (in blue) is 13.95 (in purple).  This means it would cost $13.95 to mail the (8\frac12\) pound package by priority mail.