Answer:
Hence, the number of baby sitters who earned $5 or $6 are 6.
Explanation:
According to the information:
number of dots above 4 dollar=2
number of dots above 5 dollar=3
number of dots above 6 dollar=3
number of dots above 7 dollar=2
Hence, the number of babysitters earned $5 or $6=3+3=6