You and your friend have been walking for a total of 15 minutes on two different streets. You are walking 4 feet per minute and your friend is walking 6 feet per minute for a total of 72 feet. Write a
system of linear equations to represent this situation

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?