Calcule 2x² - x + 3 para os seguintes valores de x:

a) 2

b) -1

c) 1/3

d) -1/2

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

Line a is parallel to line b, m2=4x+44, and m6=6x+36. find the value of x.

Kaitlin is on s long car trip. every time she stops to buy gas, she loses 15 minutes of travel time. if she has to stop 5 times, how late will she be getting to her destination?