To determine the cost of mailing a 10-ounce envelope given that the postage costs [tex]$0.54 for the first ounce and $[/tex]0.22 for each additional ounce, follow these steps:
1. Cost for the first ounce: The fixed cost for the first ounce is [tex]$0.54.
2. Cost for the additional ounces: Since the envelope weighs 10 ounces, the number of additional ounces is 10 - 1 = 9 ounces. The cost per additional ounce is $[/tex]0.22.
3. Calculate the cost for the additional ounces: Multiply the number of additional ounces by the cost per ounce:
[tex]\[
9 \text{ ounces} \times $0.22/\text{ounce} = $1.98
\][/tex]
4. Total cost: Add the cost for the first ounce to the cost for the additional ounces:
[tex]\[
$0.54 + $1.98 = $2.52
\][/tex]
Therefore, the total cost of mailing a 10-ounce envelope is [tex]$2.52. So, option D ($[/tex]2.52) is the correct answer.
