Question

Jane has a headache, and takes 400 mg of Tylenol. The amount, A, of Tylenol remaining in her bodyafter n hours is given by the formula A = 400(0.77)". How much of the Tylenol remains in her body after 4 hours? Round your answer to the nearest hundredth.Jane will have_______mg's of Tylenol remaining in her body after 4 hours.

Answer 1

We have the given equation for the remaining Tylenol in her body.

Where n represents the number of hours.

We need to find the remaining Tylenol in her body after 4 hours. Therefore, set n=4.

Replacing on the formula:

`A=400(0.77)^4`
`A=14.99`

The value is rounded to the nearest hundredth.

Hence, Jane will have 14.99 mg's of Tylenol remaining in her body after 4 hours.