Domain: Every possible x value.
Range: Every possible y value.
Answer:
Domain: [-5,-3)⋃(-2,4]
Range: [-1,4]
Remember that when there is unfilled dot on the graph that means whatever the number is there on x and y isn't being used which you can follow it by ) not ]. Although Y=2 isn't used on the right function but there is value for Y on the left one which is equal to X=-4 and the same goes for Y=3. On the other hand when it comes for the X=-3, that's not a part of the domain neither the X=-2.
<span>The cost that a carpet cleaning company charges is directly proportional to the number of rooms cleaned. The cost is $22 for each room.</span>
It would still be 0 because anything times 0 is still 0.