Question

Anybody know how to do functions.

Answer 1

Functions are mathematical entities that assign unique outputs to given inputs. In this topic you will evaluate, graph, analyze, and create various types of functions.

Answer 2

To evaluate a function, simply replace (substitute) the  variable with the indicated number or expression. A  is represented by f (x) = 2x + 5. Find f (3). To find f (3), replace the x-value with 3.