Which expression represents the perimeter of the figure below?

The third expression, 5x+2y+z

Step-by-step explanation:

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Well, you would count how many x's there are {there are 5}.

Then how many y's there are {2}

Then how many z's there are {1}

Then you add those up:

5x+2y+z

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Please, please give brainliest, it would be greatly appreciated, I only a few more before I advance, thanks!

$15 each

step-by-step explanation:

$45/3 children= $15 each