In? general, as the unit price of a commodity? increases, the demand for that commodity decreases.? also, as a? commodity's unit price? increases, the manufacturer normally increases the supply. the point where supply is equal to demand is called the equilibrium point. find the number of dvds and the price per dvd when supply equals demand.

step-by-step explanation: it is d

x = 3 ± √(5+y)

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb