Directions: Using the digits 1 to 9, fill in the red and blue boxes to create two functions *f*(x) and **g**(x) such that **f **°**g **exists. You can only use a number once per red box and once per blue box.

Can you create two functions *f*(x) and **g**(x) such that **g***°***f **exists?

Can you create two functions *f*(x) and **g**(x) such that **f **°**g** and **g***°***f **exists?

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