Standard 13.0
Figure out problems of rational expressions and functions by adding, subtracting, multiplying, and dividing.
Rational Functions
http://www.analyzemath.com/Graphing/GraphRationalFunction.html
A function whose rule is a quotient of polynomials.
Rational Expressions
http://www.mathsisfun.com/algebra/rational-expression.html
An algebraic expression whose numberator and denominator are polynomials and whose denominator has a degree greater than or equal to 1.