y=8x can be used to find the total amount earned by Claudia.
Step-by-step explanation:
let,
x be the number of hours and y be the amount earned.
She earned $72 for 9 hours;
9x=72
Dividing both sides by 9;

Therefore she earns 8 dollars per hour.
As the amount is same, therefore,
Amount earned = Amount per hour * No. of hours

y=8x can be used to find the total amount earned by Claudia.
Keywords: division, multiplication
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