# math

posted by .

a certain antibiotic redues the number of bacteria in your body by 10% each dse, if 4 doses of the antibiotic are taken, what percent of the original bacterial population is left

• math -

after 1st day .9 or 90% left
after 2nd day .9^2 or .81 or 81% left
after 3rd day .9^3 .......

etc

## Similar Questions

1. ### Math(geometric sequences)

A certain antibiotic reduces the number of bacteria in your body by 10% each does. a)If four does of the antibiotic are taken, what percent of the original bacterial population is left?
2. ### math

A certain antibioyic reducesthe number of bacteria in your body by 10% each dose a) if four doses of the antibiotic are taken, what percent of the original bacterial population is left. b) biologists have determined that when a person …
3. ### PreCalc

2000(1 – 0.75) = 2000 (.25) = 500 survivors after the dose of antibiotic a is taken Then, 500(1.40)3 = 1374 bacteria after the 3 hours period at the instant before the second dose is taken. a.) For antibiotic A, determine the bacterial …
4. ### PreCalculus

2000(1 – 0.75) = 2000 (.25) = 500 survivors after the dose of prescription a is taken Then, 500(1.40)3 = 1374 bacteria after the 3 hours period at the instant before the second dose is taken. 1.) For antibiotic A, determine the bacterial …
5. ### Health (Ms. Sue)

Describe how bacteria develop antibiotic diseases. A: Bacteria develop antibiotic resistance when a person stops taking antibiotics before the prescription is finished. By doing this, most of the bacteria die, but some more resistant …

The concentration (in milligrams per liter) of an antibiotic in the blood is given by the geometric series: A + Aekt + Ae2kt + + Ae(n − 1)kt where A is the number of milligrams in one dose of the antibiotic, n is the number of …
7. ### math

The concentration (in milligrams per liter) of an antibiotic in the blood is given by the geometric series A + Aekt + Ae2kt + + Ae(n − 1)kt where A is the number of milligrams in one dose of the antibiotic, n is the number of …
8. ### Math

The concentration (in milligrams per liter) of an antibiotic in the blood is given by the geometric series A + Aekt + Ae2kt + + Ae(n − 1)kt where A is the number of milligrams in one dose of the antibiotic, n is the number of …
9. ### Ms. Sue PLZ HELP!!!(science)

Humans developed antibiotics to fight bacterial infections. However, some antibiotics are no longer effective in killing the bacteria they once killed. How does the theory of evolution explain this?
10. ### Science

1. Humans developed antibiotics to fight bacterial infections. However, some antibiotics are no longer effective in killing the bacteria they once killed. How does the theory of evolution explain this?

More Similar Questions