The problem asks us to evaluate the function $f(x)$ at $x=4$ using the provided graph, and also to find the value of $x$ such that $f(x)=4$.

1. Problem Description

The problem asks us to evaluate the function $f(x)$ at $x=4$ using the provided graph, and also to find the value of $x$ such that $f(x)=4$.

2. Solution Steps

First, we need to evaluate $f(4)$. Looking at the graph, when $x=4$, the value of $f(x)$ appears to be approximately

2.

Second, we need to solve $f(x) = 4$. Looking at the graph, we look for the value of $x$ where the function $f(x)$ is equal to

4. The graph appears to intersect $y=4$ at about $x=-1$.

3. Final Answer

$f(4) = 2$

$x = -1$