Solve the Problem $f ( t ) = 0.008 t ^ { 2 } + 2.1 t + 175$

question 363

Multiple Choice

Solve the problem.
-The population of a certain country since 1990 can be approximated by $f ( t ) = 0.008 t ^ { 2 } + 2.1 t + 175$ where $f ( t )$ is the population in millions and $t$ represents the number of years since 1990 . Find the average rate of change in the country's population between 1990 and 2010 . Round to 1 decimal place.

• A) \(2.3\) million/yr
• B) \(2.0\) million/yr
• C) \(2.5\) million \(/ \mathrm { yr }\)
• D) \(2.9 \mathrm { million } / \mathrm { yr }\)

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