Answer:
20 is the answer
Step-by-step explanation:
Cube roots undo Cube numbers
You start with 20^3= 8000
Then you find the cube root of 8000 which is 20
[tex]\bf \stackrel{\textit{Julio cubed a number}}{x^3}~~\stackrel{\textit{then takes the cube root of that}}{\sqrt[3]{x^3}}\implies x~~=~~20[/tex]
