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The daily prot P' in dollars of a company making tables is described by the function P[x} = 5x2 + 280): 3515, where x is the number of tables that are manufactured in 1 day. How many tables are made per day if the company has a daily prot of zero dollars? If the company has a daily prot of zero dollars, |:| tables are made per day. {Use a comma to separate answers as needed. Type an integer or a decimal.)