{"type":"video","version":"1.0","html":"<iframe src=\"https://www.loom.com/embed/e4a6dd5032d8422f9f0f2eb564504dd0\" 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/e4a6dd5032d8422f9f0f2eb564504dd0-00001.jpg","duration":74,"title":"SAT 2019 oct_S4_Q4","description":"p: f(x) = (x + 0.25x)(50 - x)\nThe function f is defined above. What is the value of f(20) ?"}