Solve for X $\mathrm { A } = \mathrm { Ce } - 0.0004279 \mathrm { t }$

question 48

Multiple Choice

Solve for x.
-The rabbit population in a forest area grows at the rate of 7% monthly. If there are 180 rabbits in September, find how many rabbits (rounded to the nearest whole number) should be expected by next September. Use The radioactive decay of radium 226 can be described by the equation $\mathrm { A } = \mathrm { Ce } - 0.0004279 \mathrm { t }$ , where $\mathrm { C }$ is the original amount of radium and $\mathrm { A }$ is the amount of radium remaining after $\mathrm { t }$ years. If 22 milligrams of radium are sealed in a container now, how much radium will be in the container after 100 years. Round to the nearest thousand th.

• A) \(1.191 \mathrm { mg }\)
• B) \(21.991 \mathrm { mg }\)
• C) \(21.078 \mathrm { mg }\)
• D) \(22.962 \mathrm { mg }\)

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