Answer: She will earn $5 after 1 hour, $10 after 2 hours, $15 after 3 hours, and $20 after 4 hours
Step-by-step explanation: For every hour that she babysits, she is earning 5 dollars, therefore, after the first hour, she would have 5 dollars. After the second hour, she would have earned 10 dollars total, because that is double 5. Then you just continue to multiply the hour number by five, and you get $5 after 1, $10 after 2, $15 after 3, and $20 after 4.