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Unformatted text preview: for r.
Solution
What we’re looking for here is an expression in the form, r = Equation involving numbers, A, P, and t
In other words, the only place that we want to see an r is on the left side of the equal sign all by
itself. There should be no other r’s anywhere in the equation. The process given above should do
that for us.
Okay, let’s do this problem. We don’t have any fractions so we don’t need to worry about that.
To simplify we will multiply the P through the parenthesis. Doing this gives, A = P + Prt Now, we need to get all the terms with an r on them on one side. This equation already has that
set up for us which is nice. Next, we need to get all terms that don’t have an r in them to the
other side. This means subtracting a P from both sides. A  P = Prt As a final step we will divide both sides by the coefficient of r. Also, as noted in the process
© 2007 Paul Dawkins 81 http://tutorial.math.lamar.edu/terms.aspx College Algebra listed above the “coefficient” is not a number. In this case it is Pt. At this stage the coefficient of
a var...
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This note was uploaded on 06/06/2012 for the course ICT 4 taught by Professor Mrvinh during the Spring '12 term at Hanoi University of Technology.
 Spring '12
 MrVinh

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