Business & Finance homework help

Based on the skillet you have select a business model which you can implement. Browse through internet to see more insight and trend of that business and prepare a word document which shall explain following six phrases of software development lifecycle.
1) Planning and Requirement
2) Requirement Analysis
3) Analyzing & Defining Requirements
4) Designing the software
5) Building and developing the software
6) Testing the Software
7) Development and Maintenance
Also, answer these 3 question at the end:
1) Why test is important?
2) How design phase and development phase are different?
3) How development occurs?