{"type":"video","version":"1.0","html":"<iframe src=\"https://www.loom.com/embed/a760de1b21734610b7255a11ccf21720\" 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/a760de1b21734610b7255a11ccf21720-00001.jpg","duration":156,"title":"SAT 2020 march_S3_Q15","description":"p: The half-life of a certain substance in an aquatic environment is about 150 years. Which of the following exponential functions best models the amount A(t), in grams, of the substance t years after 200 grams of the substance is applied to the aquatic environment? (The half-life is the length of time needed for an amount of the substance to decrease to one-half of that amount.)"}