The perimeter of the polygon is_units.

3 units

Step-by-step explanation:

Since the sides are congruent, then

5 - 2x = - 4x + 9 ( add 4x to both sides )

5 + 2x = 9 ( subtract 5 from both sides )

2x = 4 ( divide both sides by 2 )

x = 2

Then

5 - 2x = 5 - 2(2) = 5 - 4 = 1

perimeter = 3 × 1 = 3 units

d

step-by-step explanation:

by observation, we can see that the the graph is simply the graph of y = |x| that has been shifted 4 units downwards and 3 units to the left.

we can recognize in choice d :

y = | x + 3 |   - 4 (rewriting in general form)

y = | x - (- 3) |   - 4

the "-4 " term means   that the graph has been shifted by 4 units in the negative y direction

the "-3 " term means   that the graph has been shifted by 3 units in the negative x direction

this matches our observation of the graph described above.