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The dispatcher of courier service receives a message from truck A that reports a position of +5 after a displacement of +2. What was the initial position of Truck A? First solve the problem using a number line and then solve the problem using an equation.

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r3t40

The formula we need to use is displacement.

[tex]d=\Delta{x}=x_f-x_i[/tex], where xf is final position and xi is initial position.

We report the final position of 5 and the displacement of 2 so the formula is now:

[tex]2=5-x_i\Longrightarrow x_i=3[/tex].

So the initial position of truck A is 3.

Hope this helps.

r3t40

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