What value of a makes f(x)=x^2 +a/x have a local minimum at x=2

Which of the following is typically not a characteristic of a foraging society? a. foraging societies are nomadic groups. b. foraging societies consist of small groups with ties based on kinship. c. individuals in foraging societies have few personal possessions. d. foraging societies have formal social and class structures

For one week be an inventor and write down ideas for products or services that you think should be produced

Which of the following is evidence to the past existence of glaciers?