Check headlights and dashboard lights first. If no/minimal power for the lights then replace battery.
I assume you mean a car battery. Yes, you can jump your lawn tractor with a car battery, following the usual precautions for jumping any vehicle.
weak battery?
Usually 6v, can be 12v.
Yes,its attached to red wire on battery
I usually do over night.
It uses a 12 volt lawn mower engine battery.
Yes, a lawn tractor can be jump started with a car battery, in the same manner as another car can be jump started.
Most take a 6 volt battery.
Battery is 12 volt, U1 group
Usually 12 volt negative ground.
If it is a model from the last fifty years it is a 12 volts battery.
It should be 12 volt.