So look:
1) 20 cm by 20 cm by 6 cm
2) 40 cm by 30 cm by 2 cm
Hope this helps!
Distributive property is basiclly simplifing
Answer:
[see below]
Step-by-step explanation:
Find two points that would satisfy the equation.
When x = 1:

One point would be (1, 3).
When x = 2:

Another point would be (2, 6).
Graph the points (1,3) and (2,6) and draw a line crossing through them.
Hope this helps.
Answer:
Your answer is
x= 8.5
since you cross multiply to make it a two step equation