Respuesta :

C. 7 hours because to find the hourly pay do 21 divided by 3 which is equal to 7
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Answer:

C. $7/hour

Step-by-step explanation:

To solve this you would do 21/3 to get the unit rate. Which in this case is the answer. And since 21/3 = 7, the answer would be $7 per hour.

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