An engineer who accidentally inhaled poisonous fumes was given treatment for it. The concentration of poison in the engineer's blood was measured every hour. The table below shows the record: Hours Since Inhal ati on 1 3 4 Concentration 38.1 31.2 28.6 26.9 25.4 (ug/cm³) The data in the table can be modelled by h = a +b In C, whereh is the number of hours since the accident and C is the concentration of poison in the blood. If the engineer is allowed to return to work when the concentration of poison falls below 0.2, how many days must they wait to return to work? (Round your answer UP to the nearest day).

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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I have gotten 2 different answers for this one, so i am going to ask 1 last time to see if i can work my way through this. 

An engineer who accidentally inhaled poisonous fumes was given treatment for it.
The concentration of poison in the engineer's blood was measured every hour.
The table below shows the record:
Hours Since
Inhal ati on
1
5
Concentration
38.1
31.2
28.6
26.9
25.4
ug/ cm)
The data in the table can be modelled by h = a +b lIn C, where h is the number of
hours since the accident and C is the concentration of poison in the blood.
If the engineer is allowed to return to work when the concentration of poison falls
below 0.2, how many days must they wait to return to work? (Round your answer UP
to the nearest day).
Answer:
3.
2.
Transcribed Image Text:An engineer who accidentally inhaled poisonous fumes was given treatment for it. The concentration of poison in the engineer's blood was measured every hour. The table below shows the record: Hours Since Inhal ati on 1 5 Concentration 38.1 31.2 28.6 26.9 25.4 ug/ cm) The data in the table can be modelled by h = a +b lIn C, where h is the number of hours since the accident and C is the concentration of poison in the blood. If the engineer is allowed to return to work when the concentration of poison falls below 0.2, how many days must they wait to return to work? (Round your answer UP to the nearest day). Answer: 3. 2.
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