SOLUTION: 3.21 Find f+g, f-g and f/g. Determine the domain for each function. f(x)=4x+8, g(x)=x-5 a. (f+g)(x)= b.What is the domain of f+g: c.(f-g)(x)= d. What is the domai

Question 1012693: 3.21
Find f+g, f-g and f/g. Determine the domain for each function.
f(x)=4x+8, g(x)=x-5
a. (f+g)(x)=
b.What is the domain of f+g:
c.(f-g)(x)=
d. What is the domain of f-g
e. (fg)(x)=
f. What is the domain of fg:
g. (f/g)(x)=
h. What is the domain of f/g:
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
For f(x)=4x+8 and g(x)=x-5
a. (f+g)(x)= 5x + 3
b.What is the domain of f+g: all real
c.(f-g)(x)= 3x + 13
d. What is the domain of f-g: all real
e. (fg)(x)= 4x^2 - 12x - 40
f. What is the domain of fg: all real
g. (f/g)(x)= (4x+8)/(x-5)
h. What is the domain of f/g: all real, x not equal to 5
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