show work for"Rosa earns $12 for ever hour she babysits. She earned $780 total this summer how many hours did she work?
Let's use the formula:
Total earnings = Hourly rate × Number of hours worked
We are given that Rosa earns $12 for every hour she babysits, and she earned a total of $780 this summer.
Let's assume that she worked "x" number of hours.
Therefore, the equation will be:
$12 × x = $780
Dividing both sides by $12, we have:
x = $780 / $12
x = 65
Therefore, Rosa worked 65 hours this summer.