Find the surface area of a 7.4 cm long iron rod and 3.1 m radius

The green family is a family of six people. they have used 4,885.78 gallons of water so far this month. they cannot exceed 9,750.05 gallons per month during drought season. write an inequality to show how much water just one member of the family can use for the remainder of the month, assuming each family member uses the same amount of water every month.

Which one ? is the answer and how to find this answer

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year