Answer:
About 11.299 hours.
Step-by-step explanation:
To solve this problem, you can set up an equation to model the decay of the medicine. Let's call the time that medicine has been in the body x.


Taking the log x of both sides, you get

hours. Hope this helps!
Answer:
I think you mistyped the question
Step-by-step explanation:
I get 1.13
Use distance formula.
√(2-5)²+(2-4)²
√(-3)²+(-2)²
√9+4
√13
Letter D.
Y=18.
x/y=x/y
7/9=14/y
y=14*9/7
y=18