What causes a Toyota Corolla ticking noise?

I’m going on a trip and I want to keep track of my gas mileage. However, I don’t know how to work the trip odometer on my Chrysler 300. How do I reset it and check it periodically?

I’m planning to take my Chevy Equinox on a bit of a bumpy ride, and I think I need to use the All-Wheel Drive feature. Unfortunately, I’ve never used it before and don’t know how to turn it on! Where should I check for the AWD button in my Chevy Equinox?

"I bought a minivan for $22,000 and got a 2.75% APR from USAA. I thought I'd be able to pay it off in a year, though the term is for 36 months. That said, I came into some money right after I signed the loan. Should I pay off the loan before the first payment or hold on to the loan to build credit?"