Answer:
126.
Step-by-step explanation:
Each rectangle is a step. We'll start with the top one. This is simple: 6 times 3.
The farthest left is 5 times 3.
The crossed one is 6 times 5.
The one to the right of the crossed one is 3 times 5, again.
The farthest right is 6 times 5, again.
The bottom one is 6 times 3, again.
Now, we add.
third is the correct answer
x=13
3
3^10= 3^7(x^3)
59049= 2187(x^3)
59049/2187= x^3
27=x^3
Do the square root of 3 to both sides and you end up with x=3.
Hope this helped :)