# What does the answer mean in this equation 2519(1.0177)(30). Original: f(t)=2519(1.0177t)?

## 2519(1.0177)(30)

$2519 \left(1.0177\right) \left(30\right) = f \left(30\right)$
We note that our answer has the form $2519 \left(1.0177\right) \left(30\right)$. This looks exactly like $f \left(t\right) = 2519 \left(1.0177\right) \left(t\right)$, except the $t$ has been replaced by a $30$.
Thus, our answer is our function $f \left(t\right)$ evaluated at $t = 30$. Another way to put it -- our answer is $f \left(30\right)$.