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Answer:

Step-by-step explanation:
Use


Use


Therefore:

Answer:
x = 2
Step-by-step explanation:
x^3 + 1 = 9
x^3 = 8
= ![\sqrt[3]{8}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B8%7D)
x = 2
Answer:
The volume is 81 m³.
Step-by-step explanation:
This is the right rectangular prism which dimensions are:
W = 3 m , L = 4.5 m , H = 6 m
The volume of the prism:
V = W * L * H
V = 3 m * 4.5 m * 6 m = 81 m³
Answer: Third option.
Please, see the detailed solution in the attache file.
Thanks