Please help i need to evaluate the function

f (-8) if f (x) =5x^3+1

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.

Find the unit rate for: 75% high-fiber chimp food to 25% high -protein chimp food.

Micheal is 4 times as old as brandon and is also 27 years older than brandon. how old is micheal