Question

f(x)=3x+2 g(x)=-2x+1

a) Write an equation for ( f+ g)(x)
b) Determine (f+g)(6)
c) Determine (fg)(6)
d) Determine the domain of (f/g)(x)

Answer 1

(f+g)(x) = f(x) + g(x)

(fg)(x) = f(x) g(x)
(f/g)(x) = f(x) / g(x)
so:
a) (f+g)(x) = x+3
etc.