Tuesday

September 23, 2014

September 23, 2014

Posted by **Anonymous** on Saturday, January 17, 2009 at 7:36am.

Suppose the % of alc. in the blood, t, hours after consumption is C(t) = 0.3te^(-t/2). How much time passes before the blood alcohol lvl starts to decrease?

C'(t) = 0.3e^(-t/2) - 0.15te^(-t/2)

C'(t) = e^(-t/2)(0.3 - 0.15t)

0 = 0.3 - 0.15t

t = 2 hours

So... 2 hours passes before it starts to decrease

-------

Records show that, t, weeks after the outbreak of a specific disease, approx. Q(t) = 15/(1 + 14e^(-1.7t)) thousand people had caught it. If the trend continues, approx. how many people will eventually contract it?

Q(0) = 15/1

Q(0) - 15 000

So... 15,000 people will contract the disease.

- Math - Exponential -
**drwls**, Saturday, January 17, 2009 at 7:46amI agree with both of your answers

**Answer this Question**

**Related Questions**

CALCULUS PLEASE HELP - suppose m(0) milligrams of a drug are put in the blood of...

CALCULUS PLEASE HELP!! - suppose m(0) milligrams of a drug are put in the blood ...

hard math question - When a certain drug enters the blood stream, its potency ...

Advanced Math Help! - suppose m(0) milligrams of a drug are put in the blood of ...

CALCULUS PLEASE HELP!! - suppose m(0) milligrams of a drug are put in the blood ...

Calculas - suppose m(0) milligrams of a drug are put in the blood of an ...

Math - Please Check My Answer I don't know if they are right or wrong and if ...

Calc - The number of bacteria in a culture is increasing according to the law of...

math - Suppose 48% of the general population of thw world has blood type O, 27% ...

Economics - Please check and correct my answers. Thank you. Jack Benny can get ...