Problem
Let's consider two functions: \(f(x) = 3x + 2\) and \(g(x) = 5x - 1\). What is the difference between these two functions when \(x = 4\)?
Solution
Step 1 ：First, substitute \(x = 4\) into each function. For \(f(x)\), we get \(f(4) = 3*4 + 2 = 14\). For \(g(x)\), we get \(g(4) = 5*4 - 1 = 19\).
Step 2 ：Second, find the difference between these two functions. That is, calculate \(g(4) - f(4) = 19 - 14\).
