Please capitalize where necessary: one could say that they are "invisible".
A: One could say that they are "invisible".

Please capitalize where necessary: we do not help with problems on other networks (getting banned, identd problems, server downtime, etc.).
A: We do not help with problems on other networks (getting banned, identd problems, server downtime, etc.).

Please capitalize where necessary: in this case, the tables show that the annuity factor for 5 years ay 10% per annum is
A: In this case, the tables show that the Annuity Factor for 5 years ay 10% per annum is

Please capitalize where necessary: is demands new advanced skills.
A:
IS demands new advanced skills.