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by Ian
Tue May 13, 2014 9:53 pm
Forum: Pre-Algebra
Topic: Compound Interest
Replies: 3
Views: 2030

Re: Compound Interest

I copied the text verbatim from the textbook. I'm aware of all the possible "real life" variables that may form part of the equation, but in this instance I suppose it's a bit more elementary. I'm really just hoping someone can tell me whether I'm wrong or right in my calculation.
by Ian
Tue May 13, 2014 6:20 pm
Forum: Pre-Algebra
Topic: Compound Interest
Replies: 3
Views: 2030

Compound Interest

My calculations below are not included on the list of possible answers. John borrowed money from Stan. He has to pay Stan R500 three months from now and R930 five months from now. Stan charges him an interest rate of 20% per annum, compounded monthly. John decides to pay Stan back what he owes him t...
by Ian
Tue Feb 25, 2014 2:52 pm
Forum: Intermediate Algebra
Topic: Simplification of complex fractions.
Replies: 2
Views: 1509

Re: Simplification of complex fractions.

Voilà! I completely (ashamedly) missed that. Thanks.
by Ian
Tue Feb 25, 2014 8:21 am
Forum: Intermediate Algebra
Topic: Simplification of complex fractions.
Replies: 2
Views: 1509

Simplification of complex fractions.

This is my attempt at simplification below: \frac{(8^x)(8^{3x})}{(2^{3x})(4^{x+2})} = \frac{8^{4x}}{(2^{3x})(2^{2x})(2^4)} = \frac{2^{12x}}{(2^{3x})(2^{2x})(2^4)} = (2^{12x})(2^{-3x})(2^{-2x})(...

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