Help needed for setting x and y values for "rect"

Tell us what’s happening:

This is what I have achieved so far, at this point I am totally confused, I have tried many different things to get the desired result but I am really stuck.
can you please help me to understand where I am going wrong and how to make it right.

Your code so far
Access to my codepen -

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Challenge: Visualize Data with a Bar Chart

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