Answer:
A. x > 0
Explanation:
see graph
4^x > 2^x
Replace 4 with 2^2
2^2^x > 2^x
a^b^x = a^(b*c) so
2^ 2x > 2^x
If the bases are the same, the exponents must keep the same ratio
2x>x
This is true if x>0
As long as the number (x) is a number greater than 0, the inequality would be correct. Take for example, 1 (a number greater than 0)
4^1 = 4; 2^1 = 2; 4 > 2
Another example is 2
4^2 = 16; 2^2 = 4; 16 > 4
etc.
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