I got the following question for homework but I am confused on what is being asked. I'm not looking for you to give me the answers I am just wondering what non-functional quantitative requirements are? I thought non-functional requirements, such as as usability, maintainability, etc., were qualitative?
Specify and comment on seven non-functional quantitative requirements for an e-commerce application. You should choose one sub-characteristic from each of the main characteristics [from ISO 9126].