Answer:
1. all real numbers
2. all real numbers
3. a. x > = 0
4. b. x >= -6
Explanation:
100% on edge
x ≥ 0
Domain is the set of x-values that can be inputted into function f(x).
We can see that our x-values in the graph span from 0 to infinity. Since 0 is a closed dot, we include it in our domain:
[0, ∞) or x ≥ 0, or x >= 0
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