The inequality that represents the domain of the function is 
<h3>How to determine the domain?</h3>
The function is given as:

Set the radicand greater than or equal to 0

Multiply through by 2
x - 20 ≥ 0
Add 20 to both sides
x ≥ 20
Hence, the domain of the function is x ≥ 20
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Step-by-step explanation:
2.5<x<8.0???????????
Answer:
39
Step-by-step explanation:
Answer:
2x
Step-by-step explanation:
<h2>
If this is work out the gradient then here:</h2>
Step-by-step explanation:
3-0= 3
2-(-2)= 4
3/4= 0.75
<h3>Equation of a gradient is </h3><h2>

</h2>