There are 75,000 live bacteria present in a culture in a flask. When an antibiotic is added to the culture, the number of live bacteria is reduced as
shown by the equation. Approximately how many hours have passed when
there are 1500 bacteria left alive?

1500 = 75,000 e-0.1733t

A. 22.9h
B. 22.6h
C. 22.3h
D. 22.1h

What number should be added to both sides of the equation to complete this square? x^2-10x=7

Sherrie is baking a pie for her family. she leaves the room and comes back to 35% of the pie having been eaten before she can put the topping on. how much 1 square inch strips of dough will she need for the top, now that a portion is missing? round your answer to the nearest while nimber.

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