After a half hour, Jamal would have traveled a distance of 12 mph * (1/2) hour = <<12*(1/2)=6>>6 miles.
Therefore, he is 8 miles - 6 miles = <<8-6=2>>2 miles away from home. Answer: \boxed{2}.
Jamal is 8 miles away from his house. He rides his bike home toward home at a speed of 12 mph..
How far away from home is he after a half hour?
1 mile
2 miles
3 miles
4 miles
1 answer
1 answer