If f(x) = -x + 4 and g(x) = x^2 - 5, then g(f(3)) = ?
A) -8
B) -4
C) -3
D) 0
E) 3
If f(x) = -x^2 + 6x, what is f(-3)?
A)-162
B)-27
C)-9
D)9
E)162
If f(x) = -x + 4 and g(x) = x^2 - 5, then g(f(3)) = ?
We first evaluate f(3) = -3 + 4 = 1
So.....now we have g (1)
Plug 1 into g and evaluate.....that will be your answer
Q1:
We have to do the functions inside, and work our way out.
Calculate f(3), and using the outcome, galculate the g(x) function of that.
f(3) = -3+4 = 1
g(1) = 1^2-5
Q2:
Plug in -3 into the x values
Remember, two negatives multiplied by each other equal a positive.
You are very welcome!
:P