Compact florescent light bulbs save energy when compared with traditional incandescent bulbs. Our green energy campaign includes efforts to get local residents to change their incandescent bulbs for florescent bulbs. Initially 220 households make the change. Market studies suggest that, in the absence of limiting factors, we could increase that number by 24% each month. In our target area there are 270,820 households, which we take as the limiting value. Make a logistic model that gives the number of households converting to florescent bulbs after t months. (Use t as your variable. Round B to three decimal places.) N(t) =