Corinne has a job selling magazines. she earns $7.50 per hour plus 20% of the total amount of her sales. she also gets an allowance of $40 per week for gas. she knows her weekly earnings can be shown using the following expression:

7.50h + 0.20s + 40

part a: identify a coefficient, a variable, and a constant in this expression.

part b: if corinne works for 25 hours and sells $300 in magazines, how much does she earn for the week?

part c: if corinne gets a raise and begins earning $9 per hour, would the coefficient, variable, or constant in the equation change? why?

Math it's appreciated. (picture provided)

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

Emmanuel added 888 links per minute to his chain mail. allesia started 202020 minutes after emmanuel and added 131313 links per minute to her chain mail. how long had emmanuel worked when allesia caught up to him, and how many links had he added?