If g(x)>0 for all real values of x, which of the following could be function g?
a) g(x)= x+1
b) g(x)=x-1
c) g(x)= x^2+1
d) g(x) = x^2-1
e) g(x) = x^3 + 1
a) g(x)= x+1
b) g(x)=x-1
c) g(x)= x^2+1
d) g(x) = x^2-1
e) g(x) = x^3 + 1
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