please help i will mark you as brainly

Answer:
3
Step-by-step explanation:
(x+4) ^ 1/3 = 7
We need to cube each side of the equation
(x+4) ^ 1/3 ^3= 7^3
x+4 = 343
Subtract 4 from each side
x+4-4 = 343-4
x = 339
The power raised on each side is 3