Multiple Choice
The concentration y of a certain drug in the bloodstream t hours after an oral dosage (with ) is given by the equation
How long does it take for the concentration to reach 90? Round your answer to two decimal places.
A) 4.98 hours
B) 2.98 hours
C) 0.23 hour
D) 1.39 hours
E) 100.00 hours
Correct Answer:

Verified
Correct Answer:
Verified
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