A certain radioactive isotope decays according to the model y(t) = yo e-0.0002, where y(t) represents the amount of the isotope left after t years. Question In approximately how many years will there be 94% of the isotope left? Select a single answer 309 years 256 years 600 years 300 years

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section: Chapter Questions
Problem 18T
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Question
100%
A certain radioactive isotope decays according to the model y(t) = yo e-0.0002t, where y(t) represents
the amount of the isotope left after t years.
Question
In approximately how many years will there be 94% of the isotope left?
Select a single answer
309 years
256 years
600 years
300 years
Transcribed Image Text:A certain radioactive isotope decays according to the model y(t) = yo e-0.0002t, where y(t) represents the amount of the isotope left after t years. Question In approximately how many years will there be 94% of the isotope left? Select a single answer 309 years 256 years 600 years 300 years
Review Passage
The revenue (R) from the number of sales (2) of a certain videogame is described by the function:
R(x) = -0.14x² + 420x
Question
What is the number of sales of the videogame that maximizes revenue?
Select a single answer
31,500
315,000
1,500
15,000
Transcribed Image Text:Review Passage The revenue (R) from the number of sales (2) of a certain videogame is described by the function: R(x) = -0.14x² + 420x Question What is the number of sales of the videogame that maximizes revenue? Select a single answer 31,500 315,000 1,500 15,000
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