Since it is using 1.45 gallons per hour, then after 3.5 hours it will use:
[tex]1.45\times3.5[/tex]gallons of gas.
Now, notice that:
[tex]1.45\times3.5=5.075.[/tex]Also, we know that:
[tex]5.075<5.8=\frac{11.6}{2}\text{.}[/tex]Therefore it will use less than half of the full tank, then the tank is more than half full of gas after 3.5 hours.
Answer: Yes, because in 3.5 hours it uses less than half of the full tank.
