Answer:
d) All real numbers greater than or equal to 0.
Explanation:
The given function f(x)=2/5 √x
Inside the square root, we will not have the negative number.
If we have the negative number inside the square root, then it will be imaginary number.
Therefore, domain is the all the real numbers greater than or equal to 0.
Here 0 is possible because square root (0) = 0.
Answer: d) All real numbers greater than or equal to 0.
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