Answer:
24y^15 - 24y^10 + 7
Step-by-step explanation:
f(2y^5)
= 3(2y^5)^3 - 6(2y^5)^2 +7
= 3(8y^15) - 6(4y^10) + 7
= 24y^15 - 24y^10 + 7
Answer:$4.00
Step-by-step explanation:

Actually Welcome to the Concept of the Surface areas and Volume.
Since Box A is cube, it's volume is Side^3
hence taking the cube root of 512 , we get as,
Side length of Box A is 8 m.
hence diving 8/2 = 4 m
4 m is a side of Box B.
hence, Volume of Box B is = (4)^3 = 64 cubic metres.
Vol. Box B = 64 m^3