Question

If f(x) = 2x + 3 and g(x) = x2 + 1,find f(g(3)).

Answer 1

What is the value of g(3)?

g(x) = x^2 + 1, so what is g(3) ?

Answer 2

10 .. ? @Directrix

Answer 3

Yes.

Answer 4

So I just substitute 3 in for the x .. ? @Directrix

Answer 5

f(x) = 2x + 3

So, what is f(10) if f(x) = 2*x + 3

Answer 6

@sunnyday88 So, what is f of 10 =

Answer 7

f(10) =2(3)+3 = 9 .. @Directrix

Answer 8

No. You are stuck on the 3. Use it only once to find g(x) and then use what you get for g(10) to find fx).

Answer 9

f (g(3)) = f ( x2 + 1) = f (3^2 + 1) = f(10) = 2x + 3 = 2*10 + 3 = ?

Answer 10

>>> f(10) =2(3)+3 = 9 ..

f(10) = 2*10 + 3 = ?

Answer 11

23 .. ?

Answer 12

Yes.

Answer 13

@Directrix

Answer 14

Yes, 23 is correct.

for this: If f(x) = 2x + 3 and g(x) = x2 + 1,find f(g(3)).

Answer 15

23(10(3)) .. = 690 @Directrix

Answer 16

23 is the answer. Please follow the steps above. @sunnyday88

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