(1)) Mateo puts 6 gallons of gas in his car and pays $ \$ 15 $.
(1) What is the cost of 7 gallons of gas? Complete the table.
\begin{tabular}{|c|c|c|c|}
\hline Cost (dollars) & 2.50 & 15 & $ \mid $ \\
\hline Gas (gal) & 1 & 6 & 7 \\
\hline
\end{tabular}

Answer

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Answer

\begin{tabular}{|c|c|c|c|} \hline Cost (dollars) & 2.50 & 15 & 17.50 \\ \hline Gas (gal) & 1 & 6 & 7 \\ \hline \end{tabular}

Steps

Step 1 ：$ \frac{15}{6} = 2.50 $

Step 2 ：$ 7 \times 2.50 = 17.50 $

Step 3 ：\begin{tabular}{|c|c|c|c|} \hline Cost (dollars) & 2.50 & 15 & 17.50 \\ \hline Gas (gal) & 1 & 6 & 7 \\ \hline \end{tabular}