Identify the interval(s) on which the function y = x2 + 9x - 10 is
negative.

A x<-10 and x>1
B -10< x <1
C x>10 and x<-1
D -1< x <10

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?