How do you open a Lexus RX 350 hood?

I was told that I needed to replace my battery, and I don’t want to pay anyone to do it if I can handle it myself. But then I checked under the hood and couldn't find the battery. Where does the battery sit in a Saturn Ion?

I recently got an oil change and the mechanic told me that the oil has a 5 percent oil life. How long does oil with a 5 percent oil life last before I need a new oil change?

My husband and I had two vehicles during our marriage, and when we separated, we each kept our respective cars. Unfortunately, my name is still on the loans for both of our cars since my husband couldn't qualify for the loan on his own. I'm stuck paying my $500 a month and now his $400, which he says he can't afford to pay now. What are my options?