Which of the following ordered pairs is a solution to y = 2^x? (3, 8)(3, 9)(3,27)

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

Aye asap pls ! markin da brainiest too ! btw da step choices are all add, distribute, divide, n subtract

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