Use the table to evaluate each expression, if possible. (f-g)(3)

Function evaluation involves substituting a specific input value into a function to determine its output. In this case, evaluating (f-g)(3) requires calculating the difference between the values of functions f and g at the input of 3. Understanding how to evaluate functions is crucial for solving problems that involve operations on functions.

Operations on functions include addition, subtraction, multiplication, and division of two or more functions. The expression (f-g)(x) represents the subtraction of function g from function f. Mastery of these operations is essential for manipulating and combining functions to find new outputs based on existing ones.

Function notation is a way to represent functions and their outputs clearly. For example, f(x) denotes the output of function f for input x. Understanding function notation is vital for interpreting expressions like (f-g)(3), as it clarifies which functions are being used and how they relate to each other.