We are given two different payments:
One family pays her $20 per week.
Second family pays her $22 per week.
We need to take w for number of weeks Bella has been paid.
Total payment by first family after w weeks = 20w.
Total payment by second family after w weeks = 22w.
Total amount paid by both families = 20w + 22w or (20+22)w each week.
Therefore, option B and option D both are correct options.
B:20w+22w
D: w(20+22)