# Mathematics - Algebra

Not what you're looking for?

The formula y=X*c^(t/T) can be used to describe growth and decay in nature. The final amount is y, the initial amount is X, c is the constant of proportionality, t is time and T is the time per cycle of c, when you use the growth and decay formula to solve a problem involving half-life, you will use c=1/2 and T is the half-life. Carbon-14 tests are often performed to determine the age of an organism that died a long time ago. Carbon-14 has a half-life of 5730 yrs. if a turtle shell is found and tested to have 65% of its original carbon-14, how old is it?

##### Purchase this Solution

##### Solution Summary

Step-wise solution is provided.

##### Purchase this Solution

##### Free BrainMass Quizzes

##### Exponential Expressions

In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.

##### Know Your Linear Equations

Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.

##### Solving quadratic inequalities

This quiz test you on how well you are familiar with solving quadratic inequalities.

##### Graphs and Functions

This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.

##### Multiplying Complex Numbers

This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.