Answer:
40
Step-by-step explanation:
14 + 12 + 8 + 6 = 40
Each box takes one and a half bags of packing peanuts to fill.
The simplified ratio of 15:5 is 3:1, divided both sides by 5
4|-7-2| = 4|-9| = 4x9 = 36
Alrighty-
So here we go.
Let's first go over any given values.
Shortest side = s
And we know that
3rd side = 12
Now for the longest side
"Three more" means +3
"...twice as long as the shortest side"
Means 2s
Longest side = 3+2s
Now we put this in the correct format:
P = 12 + s + (3+2s)
We can simplify further:
P = 12 + s + 3 + 2s
P = 15 + s + 2s
P = 15 + 3s
ANSWER: P = 12 + s + (3+2s)
SIMPLIFIED: P = 15 + 3s