To determine the initial value of gas in Marco's car, we need to look at the amount of gas in the car at the 0 seconds spent pumping gas.
From the given table, we can examine the first row where the seconds spent pumping gas is listed, and then look directly beneath it in the second row to find the corresponding number of gallons of gas in his car.
[tex]\[
\begin{tabular}{|c|c|c|c|c|c|}
\hline
Seconds Spent Pumping Gas & 0 & 12 & 24 & 36 & 48 \\
\hline
Gallons of Gas in Car & 3 & 5 & 7 & 9 & 11 \\
\hline
\end{tabular}
\][/tex]
At 0 seconds given in the first column, the amount of gas in Marco's car is 3 gallons.
Therefore, the output for the initial value is 3 gallons.
