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Anonymous
Domain is the number of x values that can be used and not cause an imaginary result.
Range is the number of the y values that result.
In f(x)=2x-5 the range is all real numbers.
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2x=5 x=5/2 x=2.5
2x - 5 = 15 2x = 20 x = 10
If: 2x = x+5 Then: x = 5
2x-3 = x+5 2x-x = 8 x = 8
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