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Multiplying/Dividing by a negative
-3x < 12 → x>-4
Absolute value
|x| > 10 → two inequaltiies created → x > 10 AND x < -10
Square Roots
x2 > 9 → two inequalities created → x > 3 AND x < -3
Simple interest: p = principle, r = rate, t = years
interest: prt/100
interest + principle: p + (prt/100)
Compound interest: p = principle, r = rate, t = years, n = number of compounds per year
interest + principle: p(1 + (r/n))nt