Honda Repair: Squeeky noises, freq. battery jumps, wheel bearing noise, car wont start

Question
I have done reserach and I need another opinion.  I have a 1994 Accorf EX, my red maintenance light came on today.  I just had an oil change and lube done two days ago.  Now when i drive 100 miles in distance and sit with my radio on, my car wont start i need a jump, i am thinking this may be my alternator that is causing the voltage shortage.  Also when I am in reverse and I tap my brakes I hear a high pitched squeaking, almost like something is stuck.  I'm am thinking i need to go high power my brakes or my wheel bearing may need replacement.  Help me please and thanks.  

Answer
Jessica:
The first problem you mention may be your battery or your alternator. You can take your battery to any major auto parts store and they will test for free. The high pitched squeak is probably coming from your brakes, a wheel bearing noise is more like a growling sound and you usually should be going 30+ mph to hear.
Hope this helps.
Bill