Posted by Gloria on Sunday, October 16, 2011 at 11:09pm.
I need to find the domain of f, the excluded values of f, the domain of (fg)(x); find (f+g)(5), (fg)(x), and (fg)(x) to the problem of:
Let f(x)=(7x+1)/(3x+2) and g(x)=6x+5.

College Algebra  Steve, Monday, October 17, 2011 at 1:34pm
excluded values for the domain of f: when 3x+2 = 0
Otherwise the domain of f and g is all reals.
f+/g = (x+1)/(3x+2) +/ (6x+5), so same domain as f.
fg = (7x+1)(6x+5)/(3x+2), so the domain is the same as that of f
(f+g)(5) = f(5)+g(5) = 34/13  25