regular internet use 72% 75% (2015)

How would the previous sentence be correctly capitalized?
Answer: Regular internet use 72% 75% (2015)
barbie was invited to a christmas party that will take place in ken's house....

How would the previous sentence be correctly capitalized?
Answer: Barbie was invited to a Christmas party that will take place in Ken's house....
uninstallation: as dll files are created to support other programs and softwares working well, the data and functions are actually shared by many programs. when you uninstall a program, uliagpkx.sys may be mistakenly deleted.

How would the previous sentence be correctly capitalized?
Answer: Uninstallation: As DLL files are created to support other programs and softwares working well, the data and functions are actually shared by many programs. when you uninstall a program, ULIAGPKX.SYS may be mistakenly deleted.
the software simulates the actual pearson vue test experience to help prepare students for what to expect on the day of their exam.

How would the previous sentence be correctly capitalized?
Answer: The software simulates the actual Pearson VUE test experience to help prepare students for what to expect on the day of their exam.