Answer:
Option (d) \(\frac{3}{4}\) gallon is correct.
Step-by-step explanation:
Amount of gas present in the gas tank when she began the trip is \(18\frac{1}{2} =\frac{37}{2}\) gallons.
Amount of gas she used in the trip is \(17\frac{3}{4} =\frac{71}{4}\) gallons
Now, in order to find the amount gas she has left when she finished the trip, we need to subtract the amount of gas used during the trip from the gas present in the gas tank at the begining.
So, the amount of gas she have left is \(\frac{37}{2} -\frac{71}{4}\)
\(=\frac{74-71}{4}\)
\(=\frac{3}{4}\)
Hence, she left with \(\frac{3}{4}\) gallon of gas.
So, option D is correct.
