In an international food festival, Milan can try foods from Korea, Japan, andPeru
. He can choose to try foods from some, none, or all of these countries. In the braces below, list all the possible sets of countries whose food Milan can try.

the answer is a i belaeve atleast thats what my calculator just gfave me

step-by-step explanation:

what i would say the best answer is a. 40.5

c

step-by-step explanation:

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