Point C is not shown on the number line above. If the coordinate of the point C is twice as much as the coordinate of B, then by how many times is the length of the segment AC greater than that of AB

We will have the following:
First, we will have then that the coordinate of C will be located at 6.
Then, we will have that:
[tex]\begin{gathered} AC=nAB \\ \\ \Rightarrow5=n(2)\Rightarrow n=\frac{5}{2} \\ \Rightarrow n=2.5 \\ \end{gathered}[/tex]So, AC will be 2.5 times greater than AB.