people use water to cook, clean and drink every day. an estimate of 17.5% of the water used each day is for cooking. if a family uses 68.6 gallons per day for cooking, how many gallons do they use every day​

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.