The value of a piece of jewelry increases in value given by the equation y=275(1.09)^x where x is the number of years and y is the value of the jewelry piece.
Interpret the meaning of 275 and 1.09 in the context of this situation. How much is the jewelry piece worth
after 45 years?

Agroup of student volunteers participates in a study designed to assess several behavioral interventions for improving output in a repetitive task. prior to the beginning of the study, all volunteers unknowingly observed, and their output is measured. at the beginning of the study, prior to any intervention, the volunteers perform the same task under the observation of a study administrator, and their overall output increases. which of the following terms describes this phenomenon? a. simpson's paradox b. hawthorne effect are d. novelty effect d. pygmalion effect e. observer-expectancy effect