question: in the case that your $$$ file doesn't open, it is highly likely that you do not have the correct software application installed on your pc to view or edit $$$ file extensions.
Capitalize this past sentence correctly.
A: In the case that your $$$ file doesn't open, it is highly likely that you do not have the correct software application installed on your PC to view or edit $$$ file extensions.

question: before extending the analysis to reciprocals (multiplicative inverses) it is necessary to define what it means for a sequence to be convergent to zero.
Capitalize this past sentence correctly.
A: Before extending the analysis to reciprocals (multiplicative inverses) it is necessary to define what it means for a sequence to be convergent to zero.

question: these occur at the time of the main harvest of foodstuffs, in the fall of the year.
Capitalize this past sentence correctly.
A: These occur at the time of the main harvest of foodstuffs, in the fall of the year.