Graph b would be my guess!
Answer:
you can add 3x and 2x
Step-by-step explanation:
you can add them because they are both like terms
Answer:
-8
Step-by-step explanation:
Answer:
x = 20
Step-by-step explanation:
2x + 7x = 180
⇔ 9x = 180
⇔ x = 180/9 = 20
Domain:
f(x) has a denominator, which can't be zero. So, its domain is given by
g(x) has a denominator as well. Moreover, it has a root. So, the content of the root can't be negative:
And the denominator can't be zero:
So, the domain is
Composition:
We have
The domain of this function is
But we also have to remember about the domain of g(x): if g(x) is undefined, we can't compute f(g(x))!
So, the domain of f(g(x)) is