HELP me please!? dont understand

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.

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Find two consexutive odd integers such that the sum of their square is 650