Answer:
3, 6, 9, 12, and so on, basically any number that can be divided by 3
75 additional minutes were used
$61.20-$49.95=$11.25
$11.25/$0.15=75 additional minutes
She will have $500 in 5 days because when she takes out the 20 every week she will have had $100 so to make $500 she will have to have made 5 $100
