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Centurion1
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Homework Statement
Find the Domain of f
f(x)=2+7x (2+7x is in square root)
Homework Equations
The Attempt at a Solution
I'm really not sure. The possible answers i think of seem far to easy. This problem's annoying me because i remember doing it in alg. 2 but it was so long ago i cannot remember exactly how.
Anyway here is my attempt
f(x)= 2+7X (square root all)
now do you just plug in numbers. And if numbers match up you can say whether it is all real numbers or if there is a limit?
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