Answer:
160 miles
Explanation:
The distance, D (in miles) Linda travels on g gallons of gas is given by the function:
[tex]D(g)=40g[/tex]
If she used 4 gallons of gas: g = 4
[tex]\begin{gathered} D(4)=40\times4 \\ =160\text{ miles} \end{gathered}[/tex]
Linda drove 160 miles on 4 gallons of gas.
