c) No it is not reasonable to have points between the ones on the graph because the x-axis (Number of dogs) will be a whole number.
b) y = -1
c) y = -3
b) If we were to continue the table the most logical value to use for the Mass of Purchase would be 400 because you are adding 100 to get to the next number. Example: 100+100=200 and 200+100=300.
So for the next number it would have to be 400 because 300+100=400.
The cost of 400(g) would be 320 cents because 240+80=320.
Example: 80+80=160 and 160+80=240..etc!