f + 6 = ?
Well, the answer can be pretty much any number. It all depends on what number f is. f is a variable, so you can plug in any number to replace f.
For example, if f was 5, this is what the equation would look like:
5 + 6 = 11
If f was -3, this is what the equation would look like:
-3 + 6 = 3
So, again, the answer can be anything. It depends on what f is.
PART A
The given vectors are,


The magnitude of the vector

is given by:

This implies that,






PART B
To find the unit vector in the direction of a given vector, we divide by the magnitude of that vector.

Rationalize the denominator.

Also,


PART C
The sketch of the given vectors as well as their unit vectors are shown in the attachment.