2.For the first 20 pieces of chocolates, the price is 20 pesos per piece.If you buy more than 20 pieces, it will become 15 pesos for each.

Question

Step by step explanation

With solution using piecewise function

Answer 1

C(x) = 20x for x<20

C(x) = 15x for x>20

but that means 20 pieces cost 20(20) = 400 pesos

and 21 pieces cost 15(21) = 315 pesos

which seems unlikely,but possible, so

odds are what was intended is:

C(x) = 20x for x < 20

C(x) =400+15(x-20) for x>20

or what says the same thing:

C(x) = 20x for x< 20

C(x)=15x +100 for x>20