A theater group made appearances in two cities. The hotel charge before tax in the second city was
$500
higher than in the first. The tax in the first city was
6.5%
, and the tax in the second city was
3%
. The total hotel tax paid for the two cities was
$513.75
. How much was the hotel charge in each city before tax?

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