Darren is working two jobs over the summer to pay for a new car. He gets paid $25 for each lawn that he mows (x)and $15 for each pool that he cleans (y). Darren wants to earn $750 to pay for the down payment on his car. 1) Create a model in standard form to represent this linear relationship.
2) Identify the x-intercept. Explain what this means in the context of the problem.
3) Identify the y-intercept. Explain what this means in the context of the problem.
4) Identify another combinations that are solutions to this equation. Explain what this combination mean in the context of the problem.

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