“Trans” because “trans” means going across
Using numerical values to identify and apply expository writing structure has proved an effective tool in identifying expository text structure and helping writers organize essays. The numerical values eliminate the writing jargon that varies from teacher to teacher and curriculum to curriculum. Instead, writers simply apply the implicit hierarchy of the number system to that of reading and writing. Writers just seem to intuitively “get” the idea of a number system applied to their expository writing in essays.
It would be yards because the action verb is sells, and in order to answer the question what, the direct object would have yards because the store is selling what? They're selling yards.