Which of the following are valid reasons for collecting customer feedback concerning delivered software?

Requirements engineering is a generic process that does not vary from one software project to another

A stakeholder is anyone who will purchase the completed software system under development.

It is relatively common for different customers to propose conflicting requirements, each arguing that his or her version is the right one.

Non-functional requirements can be safely ignored in modern software development projects.

User stories are complete descriptions the user needs and include the non-functional requirements for a software increment.

What is a line?

What are like terms?

What is the name for fractions with equal denominators?

What is a letter-number pair?

What is the longer dimension of a rectangle called?