Qasar Salaah and Full Salaah

Q: From last four years, every week Monday I travel from my native town to 150 KM for work (working in IT company) and I stay there till Friday evening, I stay with my friends in a rental house, then I return to my native town by Friday night, and I stay in my native town till Monday morning. My question is that while I stay in my working area (i.e. Monday morning to Friday evening) whether I have to shorten my prayer or I have to pray regularly (i.e. four rakaats)?

Q: I live in Johannesburg. I travel to Durban for one week every month. How do I perform my salaahs in Durban?

Q: Qasar is not allowed when we stay for job at destination. I have a my job at more than 1000 KM away from my home. So qasar prayer is allowed for me during travelling or not?

Q: I was born in Jeddah. I have been living in Riyadh for almost 13 years. A little while ago, my family and I decided to visit Medinah, then after 13 days of visiting Medinah, we would visit Makkah. We live in a home provided to us by the hospital (as my father is a doctor) for over 9 years. Now, in 7 days' time, we will visit Makkah insha'Allah. The question is, during this period of time, so we have to offer Qassr prayer or normal 4 rakahs of prayer?

Q: Will I be regarded as a musaafir and hence perform qasar salaah if I stay for just 4 days at most in a place 130km from home. Also note that I will be travelling for a duration of a whole year. I leave home on a Monday morning and return Friday afternoon.

Q: I will leave Insha Allah for Hajj. I will stay from September 5 to September 22 in Azizia. Will I be a Musaafir or not?

Q: I want to know if I am considered as a mussafir or not. I went for umrah on the 19th December 2015 and returned on the 2nd January 2016. During my time in umrah I was in Makkah for three days, Madinah three days and in yanbu al bahr for 7 days. So please can you tell me if I am considered Musafir or not?

Q: I have been working in Saudi Arabia for the past seven years. I am a citizen of Pakistan. Presently, I do not own a house in Pakistan but I do have other property. If I travel to Pakistan with the intention of staying there less than 15 days and stay at the house of my brother, do I need to do Qasr of my Salaahs or not?

Q: If someone goes for studies to a place which is around 400 km away from her place of residence, then when she comes back home she will read qasr namaz or normal namaz?