The periodicity of function is 
<em><u>Solution:</u></em>
Given that we have to find the period of function
<em><u>Given function is:</u></em>
<em><u>Use the below formula:</u></em>
Thus,
Now find the periodicity of cos(x)
We know that,
periodicity of cos(x) = 
Therefore,
Thus the periodicity of function is
360 is the anwer because i multipled 40 white cars by 9 times yellow car to get answer 40×9=360
To find the inverse, interchange the variables and solve for y:
f^-1 (x) = 48 + 4x
The answer to the question above is "not always". Only two lines with solution intersect. There are other two types of systems of linear equation. One of which are those which do not intersect because of they are parallel. Lastly, there are also systems of lines that intersect indefinitely because basically the equations represent the same line.
