If you are paying with a credit card, you can usually add a tip on the credit card - especially in places like restaurants. They will likely have a tipping option on the bill. If not, or if you see a tip jar at the counter, you can offer it in cash.
If your cables and your router(if you have your own) are up to the task, then yes. They told you about the motherboard because it has a built in network...
If ending cash is less than opening cash, it means that the cash balance decreased through the year, which is a possibility. What matters is if the ending cash balance...
When you call to report your card lost/stolen, the bank will immediately suspend the card. It may still be possible to call them back, tell them you've found the old...
