Divide 56 by 2 and you get 28,therefore 28 chips per box
The main property is as follow
(A^p)^q=A^pxq
so only Sam's work is correct because
(8^4)^5 x(7^3)^9=(8^4x5)x(7^3x9)=8^20x 7^27
Depending on how heavy the package is, you should take the Fed Ex if the package is heavy, and the UPS for something that is small
I cannot help you with this answer just guess slap and guess a
The total cost is NOT proportional because there will always be an added on 25 dollars to whatever your total cost is.