Solve the Problem $$P ( x ) = - 0.002 x ^ { 2 } + 1.6 x - 350$$

question 13

Multiple Choice

Solve the problem.
-The profit that the vendor makes per day by selling x pretzels is given by the function $$P ( x ) = - 0.002 x ^ { 2 } + 1.6 x - 350$$ Find the number of pretzels that must be sold to maximize profit.

• A) 0.8 pretzels
• B) -30 pretzels
• C) 800 pretzels
• D) 400 pretzels

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Definitions:

Sales Table

A structured arrangement of sales data in rows and columns that is used to analyze, organize, and track sales transactions over a period.

Customers Table

A structured set of data held in a database or spreadsheet, specifically designed to manage information about customers.

Right Outer Join

A SQL operation that returns all records from the right table and the matched records from the left table, with NULL values in the result where there are no matches.

Self Join

A database join operation in which a table is joined with itself, used to compare rows within the same table.