The total cost C, in dollars, that a shop charges to print T-shirts is C = 45 + 7n. Coach Lance paid $206 to order T-shirts for the track team. If n is the number of T-shirts ordered, how many T-shirts did Coach Lance order?

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