Answer:
-2
Step-by-step explanation:
Just do it
Ew. Composition of functions. Ok, f(g(x)) is what that fancy notation means. So, you would take g(x) & substitute that into wherever x is in f(x).
So we get something crazy like
f(x)= 4 - (.5x - 2)^2
Now, we foil out the squared quantity:
f(x)= 4 - (.25x^2 - x - x + 4)
Can you believe they call that simplification?
f(x)= 4 - .25x^2 + 2x -4
Almost there...
f(x)= -.25x^2 + 2x
Hope this helps!
Answer:
Step-by-step explanation:
We have the two functions: 
and 
.
We want to find 
.
So, let's use the second function to find 
first:
Divide:
Add:
Therefore, our expression is the same to 
.
Now, we can substitute 5 for f(x). This yields:
Multiply:
Subtract:
So:
And we're done!
Answer: the answer is 2x-1
By estimating. 5x700 is 3500. i multiplied the first digits in the equation.
