{"type":"video","version":"1.0","html":"<iframe src=\"https://www.loom.com/embed/5a9d3f3e4202447daff15c19a940f149\" frameborder=\"0\" width=\"960\" height=\"720\" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>","height":720,"width":960,"provider_name":"Loom","provider_url":"https://www.loom.com","thumbnail_height":720,"thumbnail_width":960,"thumbnail_url":"https://cdn.loom.com/sessions/thumbnails/5a9d3f3e4202447daff15c19a940f149-00001.jpg","duration":77,"title":"SAT 2020 oct_S4_Q35","description":"p: 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?"}