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The cost of renting a recording studio is $30 for the first hour and $20 for each additional hour
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The cost of renting a recording studio is $30 for the first hour and $20 for each additional hour

User Thiagoss
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5 votes
Let the number of hours be x
Assume x > 1

Total cost = 30 + 20(x -1) = 30 + 20x - 20 = 10 + 20x
User Roccer
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