The renvue (in dollars from manufacturing and selling x calculators in a day is given by the polynomial -2x²+130x. the cost of manufacturing & selling x calculators in a day is givem by the polynomial 0.375x²+15x. complete parts a & b below i need only part b​

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?