please help Given the following functions f(x) and g(x), solve (f + g)(3) and select the correct answer below: f(x) = 6x + 3 g(x) = x − 7

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please help Given the following functions f(x) and g(x), solve (f + g)(3) and select the correct answer below: f(x) = 6x + 3 g(x) = x − 7

Mathematics
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Other answers:

@queen-of-tokyo
are you able to evaluate f(x) when x = 3 ?
yes its 21 right?
are u there?
correct, f(3) = 21
how about the value of g(3) ?
-4?
very good
now just add the values of f(3) and g(3)
this works because (f+g)(x) = f(x) + g(x) (f+g)(3) = f(3) + g(3)
17 times 3?
add
4 17 25 31
(f+g)(3) = f(3) + g(3) (f+g)(3) = 21 + (-4)
those are the choices
what do you mean by 17 times 3 ?
because 21 +-4 is 17
which is your answer
I'm not sure why you are multiplying by 3
because( f+g)(3
u have to multiply by 3 after u add em right?
the notation `(f+g)(3)` does NOT mean `(f+g) times 3`
f(3) does not mean f times 3 it means "replace every x with 3, then evaluate"
ok could u tell me what it means
o ok
(f+g)(3) is just another function that is evaluated at x = 3
so its 17?
yes, that is correct
can u help with 1 more?
sure
ill create new thread then tagu
ok

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