Algebra ASAP
posted by Soly .
Could you please help me and check my answers?
Find the domain of the function.
f(x)=8x2
I got the domain being (negative infinity, postive infinity).
g(x)= 3x/(x^2 49) (I got (inifinity,7)U (7,7) U (7, +ininfinity) The U is the union symbol.
Find the domain of the composite function f * g.
12. f(x)=x+3, g(x)=1/(x+7) I got (inifinity, + inifinity) but would it be ((inifinity,7) or (7,+inifinity)
15. f(x)=7x+70, g(x)=x+2 I got for this one ((infinity,12) or (12,+inifinity))
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