Precalculus expands the student's knowledge of Algebra and Geometry. Precalculus covers functions and their graphs, equations and inequalities, polynomial and rational functions, exponential and logarithmic functions, sequences and series, and analytic geometry. This course assists the student in making the transition to college level mathematics. By the time the student completes this course, the student will be prepared for Calculus! Precalculus prepares students for the study of calculus through the study of functions - polynomial, rational, exponential, and logarithmic - and the graphs of these functions. In Precalculus, students use functions to perform calculations in such different situations as returns on investments, population growth, and radioactive decay. Students also use functions to find the best fit for scientific data and make predictions. With the tools they gain in this course, students are ready to approach the basic concepts of calculus. Calculus has been the quantitative language of science for more than 300 years. Used in the major sciences and in further study of mathematics, calculus is a key to statistics, physics, and economics.