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18. -/1 POINTS DAVISPRESTAT1 6.3.033. MY NOTES ASK YOUR TEACHER Consider the following scenario: Sales of the new RoboYak talking Internet assistant have been increasing since its debut a year and a half ago. The rate of increase in sales can be modeled by the rate function Ax) = 6,500, Ox = 18 0 , otherwise where x represents the number of months since the debut of the device and (x) represents the rate of change in sales measured in units per month. How many units were sold in the first 13 months? units Need Help? Read It Watch It 19. -/1 POINTS DAVISPRESTAT1 6.3.034. MY NOTES ASK YOUR TEACHER Consider the following scenario: Sales of the new RoboYak talking Internet assistant have been increasing since its debut a year and a half ago. The rate of increase in sales can be modeled by the rate function Ax) = 6,500, Ox= 18 0 , otherwise where x represents the number of months since the debut of the device and (x) represents the rate of change in sales measured in units per month. How many units were sold from 12 to 18 months? units Need Help? Read It Watch It