Cosine is transformed in the form:

The amplitude is a
The period of cosine is:

And the phase shift is always by c, so that means our transformed functon in the form mentioned above looks like:

So our period is 
Our phase shift is by
units to the right
and our amplitude is 3.
Answer:
53.3
Step-by-step explanation:
34^2=1156
41^2=1681
1156+1681=2837
Square root of 2837 is 53.26 which rounded to the nearest tenth is 53.3
N-9=14
that's just an example. what it equals to can be anything really