This graph shows how the revenue at Jonathan's Auto Wash depends on the number of
customers.
Revenue
$100
$90
$80
$70
$60
$50
$40
$30
$20
$10
Revenue at Jonathan's Auto Wash
0 10 20 30 40 50 60 70 80 90 100
Number of customers
What is the constant of variation?
per customer
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