Answer
$C(10)=280$
The value of US trade with China in 2004 (10 years after 1994) was 280 billion dollars.
Work Step by Step
We have to substitute $t=10$ in the given function:
$C(t)=3t^2-7t+50$
$C(10)=3(10)^2-7(10)+50=300-70+50=280$
The interpretation is:
The value of US trade with China in 2004 (10 years after 1994) was 280 billion dollars.
