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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Definitions:

Lowest Terms

The simplest form of a fraction, where the numerator and denominator are reduced to their smallest values without changing the value of the fraction.

Fractions

Numerical quantities that represent a part of a whole, typically written with a numerator divided by a denominator.

Mixed Numbers

A number consisting of an integer and a fraction, used to represent quantities greater than a whole but less than two wholes.

Lowest Terms

Lowest terms refer to a fraction that has been simplified to its smallest possible integer numerator and denominator.