What does 90+5672 add up to?

Which statement best describes the underground railroad? a.) it is a train that took slaves from the south to the north. b.) it is a business that harriet tubman founded to slaves become free. c.) it is a secret route that slaves took to escape from southern slave states to the north. d.) it is a road that slave owners disliked using for travel.

Why dose the third fire go out in to build. fire

What is the line drawn on a production possibilities graph called?