In each case, decide which of the green shaded regions represents the domain of the given function.

1. Let $f(x,y) = \dfrac{%0}{%1},$ with its natural domain. MULTIPLECHOICE
BUTTONS
MESSAGE
2. Let $f(x,y) = \sqrt{%2},$ with its natural domain. MULTIPLECHOICE
BUTTONS
MESSAGE
3. Selling $x$ gizmos and $y$ gadgets results in a profit of $P = %3$ dollars. For reasons too complicated to explain, %4. Decide which of the following is the appropriate domain. MULTIPLECHOICE
BUTTONS
MESSAGE

RANDOMIZE