Lisa got injured during a basketball game. She was given 500 mg of medicine. After each hour the amount of medicine in her body is cut in half. How much medicine will be left in her system after 9 hours?

Question

Lisa got injured during a basketball game.  She was given 500 mg of medicine.  After each hour the amount of medicine in her body is cut in half.  How much medicine will be left in her system after 9 hours?

anonymous · Answer

500 mg /2 after one hour is 250 ...divide again for the second hour ..divide again for the 3rd ..and so on....can you do it now?

anonymous · Answer

So just keep dividing the answer by 2 until i get to 9 hours?

anonymous · Answer

Correct :)

anonymous · Answer

thanks c:

anonymous · Answer

np :)

anonymous · Answer

it's easier to write down an equation down

$$500 \frac{1}{2*h}$$

where h is the number of hours

anonymous · Answer

since we have 9 hours just replace h with 9

anonymous · Answer

does anyone know the answer?