What is the answer?
A) 32
B)27
C)28
D)31

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

Aresearcher believes increased perceived control influence the well-being of residents at a nursing home. to test this , she allowed one group of residents to have control over their daily lies, (where to eat etc) . the other group of 5 residents had these deceisions made by staff. the resident's feelings of well-being were measured on a 10 point scale at the end of a one month trial period. is there a difference on well-being?

Can someone tell me if these are correct?