Multiply.
(2.5×10−^8)(9×10−^10)
express your answer in scientific notation.
a. 2.25×10−^19
b. 2.25×10−^17
c. 2.25×10−^16
d. 2.25×10−^18
me quick plz my test is timed!
and i only have like 10 more min ö ♥

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?