Please help LMO isosceles. Find x, LM and Lo

Carter drank 15.75 gallons of water in 4 weeks. he drank the same amount of water each day.a. estimate how many gallons he drank in one day.b. estimate how many gallons he drank in one week.c. about how many days altogether will it take him to drink 20 gallons?

For what values of x is x2 + 2x = 24 true?

Indicate the formula for the following conditions: p^c(n,r)=