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anonymous
 5 years ago
You go to the doctor and he gives you 13 milligrams of radioactive dye. After 24 minutes, 4.25 milligrams of dye remain in your system. To leave the doctor's office, you must pass through a radiation detector without sounding the alarm. If the detector will sound the alarm if more than 2 milligrams of the dye are in your system, how long will your visit to the doctor take, assuming you were given the dye as soon as you arrived? Give your answer to the nearest minute.
You will spend ? minutes at the doctor's office.
anonymous
 5 years ago
You go to the doctor and he gives you 13 milligrams of radioactive dye. After 24 minutes, 4.25 milligrams of dye remain in your system. To leave the doctor's office, you must pass through a radiation detector without sounding the alarm. If the detector will sound the alarm if more than 2 milligrams of the dye are in your system, how long will your visit to the doctor take, assuming you were given the dye as soon as you arrived? Give your answer to the nearest minute. You will spend ? minutes at the doctor's office.

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amistre64
 5 years ago
Best ResponseYou've already chosen the best response.04.25/13 = e^24t ln(4.25/13) = 24t ln(4.25/13)  = t 24

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0we use the rate to determine when 2 is the answer

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0time then equals: ln(2/13)  = minimum time in office rate

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok i see...:) hopefully i can get the next story prob right:) i have 17 of them:(

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0http://www.wolframalpha.com/input/?i=%28ln%282%2F13%29%29%2F%28ln%284.25%2F13%29%2F24%29 says 40.18 minutes

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0someone told me about this!:O! thanks!!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the website i mean haha

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0yeah, i just stumbled upon it one day while cleaning behind the fridge lol
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