Anya got $10 for her birthday. she considers buying a dvd of her favorite movie for $9. she also thinks about buying a new t-shirt for $12. then she decides to buy a cd for $8. what is the opportunity cost of her decision?

Ineed ideas for how to have fun with my friends i feel like they dont like me

Which of the following variables has the strongest influence on the variations found in american family life? a. race and ethnicity b. religious affiliation c. social class and culture d. education and occupation

What was piaget's explanation as to why preschool-age children in the preoperational stage make errors on tasks requiring conservation? a) preschool children's tendency toward centration prevents them from focusing on other relevant features of a situation b) preschool children have not yet developed numerical understanding; therefore, different amounts are meaningless c) preschool children's neural-visual network is not fully matured d) preschool children have not lived long enough and accrued enough experience to know the difference between quantities