Precalculus Graphs & Models Fourth Edition (2 Books)

Custom edition taken from Precalculus: Graphs & Models, Fourth Edition. Contents contain: basic concepts of algebra, graphs, functions, and models, more on functions, quadratic functions and equations; inequalities, exponential and logarithmic functions, the trigonometric functions, trigonometric identities, inverse functions, and equations, applications of trigonometry, and systems of equations and matrices.