If the fixed cost of the ride is $3 and the variable cost is $1 per mile driven, we can write the following equation to relate the total cost (y) and the number of miles driven (x):
[tex]y=3+1x[/tex]If the number of miles is 61, we can use x = 61, so the total cost will be:
[tex]\begin{gathered} y=3+1\cdot61 \\ y=64 \end{gathered}[/tex]So the final cost will be $64.