Paula remembers that 20 hours and made $80

If you had to an a how much hourly pay did Paula get for working 20 hours and making $80 it would have been $4/hour

It would be 4$ because you would have to divide 80 by 20 to find how much her pay was for an hour.

The correct answer is a. when they started making tools that will them in cultivating lands, they could raise crops and that made them attached to one place for a longer period of time. after that, they started domesticating animals and building their own permanent settlements that resemble the ones we have today.