This should be a rotation!
This would be 6C3
= 6*5*4
---------- = 20 answer
3*2*1
For the table, y = 9x.
so the price of a short cake is $9
For the graph, y = 4x
so the price of a sweet bread is $4
9-4 = 5
the short cake is $5 more than the sweet bread