Solve −2x2 +3x − 9 = 0. (2 points) select one: a. x equals quantity of 3 plus or minus 3i square root of 7 all over 4 b. x equals quantity of 3 plus or minus 9i square root of 7 all over 4 c. x equals quantity of negative 3 plus or minus 3i square root of 7 all over 4 d. x equals quantity of negative 3 plus or minus 9i square root of 7 all over 4

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?