Phone plan a advertises a rate of $0.25 per minute, while phone plan b advertises a rate of $0.17 per minute for the first 100 minutes and $0.32 for each additional minute. • identify which plan has a variable rate of change and explain why the rate is variable. • identify the cost for phone plan a and for phone plan b when 100 minutes are used. show all your work. • compare plan a and plan b and describe when phone plan a is a better deal than plan b

Suppose a pendulum is l meters long. the time, t,in seconds that it tales to swing back and forth once is given by t=2.01

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

Thomas is using a drawing program to complete a construction. which construction could he be completing? two perpendicular lines are drawn. inscribing an equilateral triangle in a circle inscribing a square in a circle inscribing a regular pentagon in a circle inscribing a regular hexagon in a circle