Question

Question 20

Solve the problem.

The percent of concentration of a certain drug in the bloodstream xhr after the drug is administered is

How long after the drug has been administered is the concentration a maximum?

given by K(x)=-

O2 hr

7 hr

O 4.9 hr

2x

Round answer to the nearest tenth, if necessary.

O 2.5 hr

OO

x2+49

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