X + 7, ie the number set on Monday + seven more
A change in any one of the underlying factors that determine what quantity people are willing to buy at a given price will cause a shift in demand. Graphically, the new demand curve lies either to the right (an increase) or to the left (a decrease) of the original demand curve.
24*7 = 168
(2*12)*7=168
168*2=336
336 Total sweets
Could help if you showed the rest of the table