A new cell phone is introduced into the market. It is predicted that sales will grow logistically. The manufacturer estimates that they can sell a maximum of 60 thousand cell phones. After 30 thousand cell phones have been sold, sales are increasing by 8 thousand phones per month. Find the differential equation describing the cell phone sales, where y) is the number of cell phones [in thousands] sold after t months. Enter at least 3 decimal places for the constants