video1.0<iframe src="https://www.loom.com/embed/5a9d3f3e4202447daff15c19a940f149" frameborder="0" width="960" height="720" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>720960Loomhttps://www.loom.com720960https://cdn.loom.com/sessions/thumbnails/5a9d3f3e4202447daff15c19a940f149-00001.jpg77p: The line graph shows the total length, in miles, of major commercial railroad tracks in the United States from 1916 to 1976. The average rat e of change, in miles per year, of the total length of major commercial railroad tracks in the United States from 1916 to 1926 is m. What is the value of m?