If emily buys a bag of food and toys for her bunny and she buys o bag of food for 20 dollars and she buys 2 toys for 3 dollars each write one equation to describe the total amount emily spend on food and toys for her bunny. explain how to use the order of operations to solve the equation

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