Answer:
Second option: 4 cm and 7 cm.
Step-by-step explanation:
A Parallelogram is defined as a type of Quadrilateral, whose opposite sides are parallel and have equal lenght.
Since the opposite sides
and
have the same lenght, then:

Now you have to solve for "n":
Add 6 to both sides of the equation.
Subtract 3n to both sides of the equation:

Divide both sides of the equation by 2:

To know the lenght of two adjacent sides, susbtitute
into the third side
and into one of the the sides that are opposite to eache other. Then:

Answer:
the 3 one
Step-by-step explanation:
Not a function, because it does not pass the vertical line test.