Can't make it to the the University Math Center?
Here's a list of online resources that might help.
WolframMathWorld: Comprehensive mathematics resource
Paul's Online Math Notes: An excellence resource for course cheat sheets/formula tables
S.O.S. Math: Comprehensive undergraduate level math review guides
Khan Academy : Collection of video tutorials on various subjects including math
Pinterest Math Lectures: Collection of mathematics video lectures
Purplemath modules: Online collection of algebra guides
Dr. Math Forum: Math questions forum with solutions provided
Interactive Math: Collection of detailed math lessons with good examples
Better Explained: Math explained via concepts instead of steps
SOCR Stat Resources: Collection of statistics tables, applets, and other resources
IXL Learning -Algebra I (Math 95/96): Lots of interactive example problems for various topics: Ratios and Proportions, Measurements, Factoring, Polynomials, Exponents, Absolute Value Equations
IXL Learning Algebra II (Math126): Lots of interactive example problems for various topics: Functions, Systems of Equations, Circles, Logarithms, Complex Numbers, Matrices, Hyperbolas.
IXL Learning -Pre-Calculus: Lots of interactive example problems for various topics: Trigonometry, Complex Plane, Polar Form, Vectors, Probability, Statistics.