Fred's weekly earnings for mowing lawns can be represented by the function f(x) = 45x - 40, and george's weekly earning for delivering papers can be represented by the function g(x) = 85x - 110. fred says that after 3 weeks they will have earned the same amount. determine whether fred is correct. explain.

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