5-6 refer to the problem below
the length of a rectangle is three less than twice it's width of the perimeter of the rectangle is 36 units what is it's length

5.which of the following formula should be used to solve the problem?
a.P=4s
b.p=a+b+c
c.p=2L+2W
d.p=bb

6.what is the width of the rectangle
a.4
b.14
c.7
d.11