Simple actually. The 1000 is the starting price the -20 is the losing of value per week and the w stands for the number of weeks.
I'm not sure what the question is here. If an answer is communicative property, go with that. If it is asking for
, the answer is about 84.8230016469.
X + x+1 + x + 2 = 20
3x + 3 = 20
3x = 17 but can't start with x = 6 because 6+7+8 > 20,
so have start with 5 + 6 + 7 = 18 are the 3 sides.
Which is the pen and which is the rabbit dimention? i promise i will answer if you clarify on this