High concentrations of carbon monoxide CO can cause coma and possible death. The time required for a person to reach a COHB level capable of causing a coma cần be approximated by the quadratic model T= .0002x2 - 316x + 127.9, where T is the exposure time in hours necessary to reach this level and 500s xs 800 is the amount of carbon monoxide present in the air in parts per million (ppm). a) What is the exposure time when x = 640? b) Estimate the concentration of CO necessary to produce a coma in 8 hr. ..... What is the exposure time when x = 640? O hr (Round to the nearest tenth as needed.)

High concentrations of carbon monoxide CO can cause coma and possible death. The time required for a person to reach a COHB level capable of causing a coma cần be approximated by the quadratic model T= .0002x2 - 316x + 127.9, where T is the exposure time in hours necessary to reach this level and 500s xs 800 is the amount of carbon monoxide present in the air in parts per million (ppm). a) What is the exposure time when x = 640? b) Estimate the concentration of CO necessary to produce a coma in 8 hr. ..... What is the exposure time when x = 640? O hr (Round to the nearest tenth as needed.)

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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter8: Polynomials

Section8.1: Adding And Subtracting Polynomials

Problem 44PPS

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High concentrations of carbon monoxide CO can cause coma and possible death. The time required for a person to reach a COHB level capable of causing a coma
cần be approximated by the quadratic model T= .0002x2 - 316x + 127.9, where T is the exposure time in hours necessary to reach this level and 500 sxs 800 is the
amount of carbon monoxide present in the air in parts per million (ppm).
a) What is the exposure time when x = 640?
b) Estimate the concentration of CO necessary to produce
coma in 8 hr
What is the exposure time when x = 640?
O hr
(Round to the nearest tenth as needed.)
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