Question

1. Given f(x) = x2 – 4x + 4. Solve for:

(a) f(3)

(b) f(x + 3)

2. Considering the function given in the previous number, is f(x + 3) the same as

f(x) + f(3)?

3. Given f(x) = +1



2−9

, for what values of x will be the evaluation of function NOT

possible?

4. Choose a real-life scenario where we can apply evaluation of functions and/or

piecewise functions. Explain why do we need the skill in evaluating functions.​

Answer 1

Answer:

1 f(3) = 3*2-4*3 +4=-2

f(x+3) = (x+3)*2 - 4*(x+3) +4

= 2x +6 - 4x -12 + 4

= -2x-2

=-2(x+1)

Step-by-step explanation:

1 f(3) = 3*2-4*3 +4=-2

f(x+3) = (x+3)*2 - 4*(x+3) +4

= 2x +6 - 4x -12 + 4

= -2x-2

=-2(x+1)