There is no cost to start of with, therefore it can not be solved because there is not enough information. All we know is that she drank half of a 12 ounce bottle. No prices were put in.
The answer: The president
Think about this, imagine fearing to go out into the streets because you might get attacked. Imagine the only purpose of your existence was to clean, make babies, and respect your husband. That was the life of Woman before the Woman's rights movement. As you can see we have came a long way from then but some people still think that way. Society felt as if Woman weren't as good as men. they thought that Woman couldn't do anything except care for their husband's.
In colonial America, Africans "contributed" to society by being a source of income for people who bought and sold them into slavery. They also contributed by being laborers in the southern plantations.
Women contributed to the society by being a house wives --meaning they took care of the house-- as well as cooking meals for the family and taking care of the children.
Native Americans, in the earlier days, contributed by trading with settlers and teaching them how to do things in their environment.
(Sorry I really don't know what the children did)
A physical change chamges the substances apperance, but a chemical changes the chemical formula of a substance. Hope this helps!