Hannah serves tables at a restaurant. The first table she served on a Monday paid her $70.15. The bill amount was $61.00, and the rest was Hannah's tip. What percentage of the bill was Hannah tipped? PLEASE ANSWER SOON. I AM DOING THIS FOR SUMMER HOMEWORK. Am giving 30 points..

What is the rescursive formula for this geometric sequence? 7, -14, 28, -56

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

Jeremy wants to determine the number of solutions for the equation below without actually solving the equation.