From software engineering. Plz give me correct and short answers

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5.7 Explain the severity ranks of the bugs. 5.9 you distribute cards to your users and tell them to write requests for new functionality to your software. A user of your software says, "l can't fit my user story on these small cards." What should you tell this user?Why? 5.10 In the point-of-sale software, two types of payment are accepted: check and charge. Write three new user stories for three additional types of payment