At the moment a certain medicine is injected, its concentration in the bloodstream is 120 milligrams per liter. From that moment forward, the medicine's concentration drops by 30% each hour. Write a function that gives the medicine's concentration in milligrams per liter, C(t),t hours after the medicine was injected.

Q: What percent of 40 is 100?

A: Let x % of 40 is 100.

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A:

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A:

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A:

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A: n = 200 r = 80

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Q: 75 is what percent of 150

A: Let 75 be x % of 150