The hardest questions on the SAT live here. Quadratics and nonlinear functions separate 700+ scorers.
Vertex form, standard form, axis of symmetry, max/min values, graphs.
Solve by factoring, quadratic formula, completing the square. Discriminant.
Exponential growth and decay, models, graphs, interpreting equations.
Square roots, cube roots, fractional exponents, simplifying radicals.
Factoring, expanding, simplifying polynomial and rational expressions.