Chanel has persistent and distressing thoughts of germs; she cannot eat without washing her hands three times before and three times after every meal. Although her hands are raw from the washings, she is overwhelmed with anxiety if she doesn't wash using this method. Chanel's problems illustrate .

How many soultions does the system of equations have y= -6x + 330x + 5y = 15a.one b.twoc.infinity manyd.none

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

Which of the following best illustrates the importance of addressing the three questions of economics? people’s desires and needs are always changing. businesses need to use limited resources wisely. traditional methods of production are outdated. businesses need to limit production.