Question

Need help QUICK!!! #3

Answer 1

Answer: Approximately 12.32 milligrams

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Step-by-step explanation:

Plug in t = 18 to get

f(t) = 110*(0.8855)^t

f(18) = 110*(0.8855)^18

f(18) = 110*(0.112045)

f(18) = 12.32495

f(18) = 12.32

The answer is approximate. I rounded to two decimal places (aka to the nearest hundredth).

Answer 2

A=f(18)=110(.8855)^18=12.3mg