Final answer:
'Yes'. The cost of mailing a letter is proportional to its weight. For a 6-ounce letter, the cost is $2.46, calculated by adding $1.95 for the first 3 ounces and $0.51 for the additional 3 ounces.
The correct answer is none of above.
Step-by-step explanation:
The cost of mailing a letter is proportional to the weight. To calculate the cost of mailing a 6-ounce letter, we use the following information provided: the first 3 ounces cost $1.95 and each additional ounce costs $0.17. Since we have an additional 3 ounces (6-3 = 3), we calculate the additional cost as $0.17 multiplied by 3, which is $0.51.
Adding this to the base cost of $1.95 gives us $1.95 + $0.51 = $2.46. However, this answer is not one of the provided options, which implies there might be an error in the question or incorrect options have been given.