Holly earns $30 for babysitting 5 hours. She earns $28 when she does chores for 4 hours. Which compares the unit rates?

The rate of earning money for both activities will be calculated by dividing the amount earned by the total time spent for each of the activity.

Babysitting: rate = ($30 / 5 hours) = $6 / hour

Doing chores: rate = ($28 / 4 hours) = $7 / hour

Thus, Holly is able to earn money faster when doing the chores compared to when she do the babysitting if she work for the same amount of time for each.