When Elijah left his house in the morning, his cell phone battery was partially charged. The charge remaining in Elijah's battery, as a
percentage, can be modeled by the equation B = 27 – 4.5t, where t
is the number of hours since Elijah left his house. What is the slope of
the equation and what is its interpretation in the context of the
problem?
B=27-4.5t

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