The cost of the apples can be modelled using the equation;
[tex]2x=6[/tex]The value of x can be calculated by dividing both sides by 2;
[tex]\begin{gathered} \frac{2x}{2}=\frac{6}{2} \\ x=3 \end{gathered}[/tex]So, Plotting the point x=3 on the number line we have;