I believe the correct answer is the second choice: <span>We walked through the Red Oak Nature Center today; it was surprising how many bicyclists were there.
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Both are a number (6) multiplied by a variable (z).
However, 6z is the correct way to write this.
We usually write the number first, that's just the way it's done.
It sort of makes sense because 6z is literally equal to 6 z's.
I think it is the last one the study of non participation
The limited should be 2 to 1 hours
