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Single Variable Calculus

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Moderate

Average Value: Application in Science

SVCALC-MJB$UB

An observatory gives carbon dioxide concentration $y$ (ppm) over a $30$ year period as $y=310+0.7t+0.02t^{ 2 }$ where $t$ is in years.

What is the average carbon dioxide concentration in ppm over the time interval $[0,30]$?

A

$9795$

B

$305.5$

C

$326.5$

D

$349$