Final answer:
The maximum length plus girth allowed for a package to be accepted by a postal service is 120 inches. Jesse should use grams or kilograms to weigh the package containing books and documents. Knowing how to convert between pounds and ounces is essential for calculating postal costs. So, the correct answer is option 1.
Step-by-step explanation:
The question asks about the maximum length plus girth allowed for a package to be accepted by a postal service. The keyword in the question is 'no more than,' which indicates an upper limit. Therefore, the answer to 'What is the maximum length plus girth allowed for a package to be accepted?' is 1) 120 inches. Any package with a length plus girth exceeding that measurement will not be accepted.
Regarding Jesse's situation, since he needs to determine postage based on size and weight and is dealing with books and documents, the metric unit of measurement he should use is mass. In this context, the appropriate metric unit to weigh the package would be grams or kilograms.
The concept of postage cost is critical because it varies with weight. Understanding pounds and ounces is crucial when planning to mail a heavier package that weighs multiple pounds.