Solve the Problem $C = 0.057 x ^ { 2 } + 0.67 x + 4.6$

question 177

Multiple Choice

Solve the problem.
-The formula $C = 0.057 x ^ { 2 } + 0.67 x + 4.6$ can be used to approximate the number, $C$ , (in millions) of laptops sold over a ten-year period, where $x$ is the number of years since the first year this information was recorded. According to this formula, how many laptops were sold in year 10 ? Round the answer to the nearest tenth of a million.

• A) 17 million
• B) 11.9 million
• C) 4.6 million
• D) 15.2 million

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