According to a sleep foundation, in 2013 a certain nation averaged 6.7 hours of sleep each weeknight. in 1914, they averaged about 8 hours and 30 minutes of sleep per weeknight. model these data by a linear equation, and use it to predict the year when the nation will not be sleeping at all on a weeknight model these data by a linear equation, assuming that the initial year is t=0. y= + (round to four decimal places as needed.) use the equation to predict the year when the nation will not be sleeping at all on a weeknight the nation will not be sleeping at all on a weeknight in the year (round to the nearest year as needed) tunache answer