Hi Melody,
It is nice to meet you too :)
I'm really sorry if I still don't understand.
I know that 560 is two times 280, but, could you explain to me how to get 280 and 400?
And for the graph, is it Cake A = 40 pcs, Cake B = 80 pcs, and Cake C = 0 pcs to get the maximum profit?
Thank you very much for your help.