Answer
Using technology, the linear model
$V(t)=-0.04t+b$
provides a perfect fit. This is the model with best fit.
Work Step by Step
Using the graphing calculator at desmos.com, we
1. create a table with columns $x_{1}, y_{1}$ and enter the three points.
2. Define a linear best fit formula by entering
$y_{1}\sim mx_{1}+b$
to obtain $m=-0.04$ and $b=1.46$
3. Add a third column of the table of step 1, entering $mx_{1}+b$, to calculate the function values for the three values of t.
We note a perfect fit (all three points lie on the graph).
