What is the number called next to the variable?

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?

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Select the quadratic that has root x = 8 and x = -5