SOLUTION: Let f(x) = 3x + 2 and g(x) = 7x + 6. Find (f • g) and its domain.

Algebra ->  Functions -> SOLUTION: Let f(x) = 3x + 2 and g(x) = 7x + 6. Find (f • g) and its domain.      Log On


   

Question 566302: Let f(x) = 3x + 2 and g(x) = 7x + 6.
Find (f • g) and its domain.
Answer by ad_alta(240) About Me  (Show Source):
You can put this solution on YOUR website!
Simply "plug" g into f. We get (f • g)=3(7x+6)+2=21x+20. There aren't any numbers you can't plug into this function, so the domain is all reals.