If you are solving for x than the answer would be x=4.
Answer:
Rotation - Twists the shape
Reflection - Flips the shape
Translation - Slides a shape
Dilation - Enlarge or reduces a shape
Congruent - Same shape same size
Rigid Motion - type of transformation that creates congruent figures
Hope this helped. I apologize if any of them are wrong..
Why did you delete my answer it was correct

P=Perimeter
L=Length
W=Width
Hints given are P= 76, L=20 so 2L=40
76=40+2w
76-40=2w
36=2w
18=w
Answer:

Step-by-step explanation:
Given, y = 0.8
To find : value of x

plug the value of y

Multiply the numbers: 8 and 0.8

Move 6.4 to right hand side and change it's sign

Subtract 6.4 from 40

Divide both sides by 4

Calculate

Hope I helped!
Best regards ! :D