Question

What is domain and range of (f o g)?

f(x) = x+3; g(x) = 1/x

a) domain: {x|x all real numbers}
range {y|y not equal to 3}
b) domain: {x|x not equal to 0}
range:{y|y all real numbers}
c) domain:{x|x not equal to 0}
range:{y|y not equal to 3}
d) domain:{x|x not equal to -3}
range:{y|y not equal to 0}