BRAINLIEST, 5 STAR A LIKE, AND FOR ANYONE WHO ANSWER THIS CORRECTLY PLEASE HELPPPP

Answer:
4x+20
Step-by-step explanation:
Bottom length is:
x
Second length is:
2x+8
Last length is:
x+12
Perimeter is adding up all of these lengths:
x+2x+8+x+12:
Simplify:
4x+20