alg
posted by alli .
find the domain of the composite function f of g. f(x)=x^2+9;g(x)=sqrtx7
please show work

f(g) = g^2+9
domain of f is all reals, so as long as g is real, so is f.
domain of g is all reals >= 7
so domain of f(g) is all reals >= 7
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