They cost less because there are more items in stock meaning that there isn't a limit here is another way of thinking if there are less Items then they can charge you more per item because they know you are gonna want it but if there are tons of that one item they there kinda like eh then you think oh I can live without that....... Hope this helps
W=4 that the answer !!!!!
You said that 'A is 30' right there in the equation
so it would be
Xsquared=30
No hablo, lo siento, simplemente no puedo
