The height of stack is 36 feet.
<h3>What is unitary method?</h3>
The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value
Given:
height of 1 crate = 3 feet
height of 1 crate in inch = 3*12
= 36 feet
Hence, the height of stack of shipping crates is 36 feet.
Learn more about unitary method here:
brainly.com/question/11214202
#SPJ1
The equation to solve for p....[12p = 420]
Then divide both sides by 12.
And your answer....[p = 35]
the like terms are: 10y, and -9y because they are both of the same variable, y.
Answer: 
<u>Step-by-step explanation:</u>
