Question:

On the real number line below, with coordinates as labeled,

Last updated: 7/17/2022

On the real number line below, with coordinates as labeled,

On the real number line below, with coordinates as labeled, an object moves according to the following set of instructions: from point P the object moves right to Q, then left to R, then right to S, and finally left until it returns to its original position at P. What is the closest estimate of the total length, in coordinate units, of the movements this object makes?