Question

For the function f(x) = |2x - 7| - 3, find f(2).

Answer 1

Plug in 2 for x and if and when you get a negative number inside | | it will become positive.
For example:

f(x) = |6x -15| + 2, find (2)
= |6*2 - 15| + 2
= |12 - 15| +2
= |-3| + 2
= 3 + 2
= 5

Answer 2

\[f(2)=\left| 2*2-7 \right|-3=\left| -3 \right|-3=3-3=0\]

Answer 3

Yes.