If xy = a and x2 + y2 = b, which of the following is equivalent to 9b – 18a ?
a) (3x – 3y)2
b) (3x – 6y)2
c) (9x – 9y)2
d) (9x – 18y)2

Find the commission on a $590.00 sale if the commission is 15%.

A. what is the area of the base? use complete sentences to explain your reasoning. b. what is the volume of the prism? use complete sentences to explain your reasoning.

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?