4 years and 9 days from residence date.

No a separate one for dependent is not needed.

You can contact NVC to reopen the case to make the correction.

This can be updated at time of interview.

A visa is needed. The I94 does not suffice.

The fee is $535 for each I130 application.

Timing varies but generally within 4-6 weeks.

This can be corrected at a later date.

More information is needed to understand the incident.

Timing varies but generally should be within a few months post receipt of RFE response.