The Xiaohu family used the three days of New Year's Day to drive to a certain scenic spot. Before the car set off, there was 36L of fuel in the fuel tank. After driving at a constant speed for several

The Xiaohu family used the three days of New Year's Day to drive to a certain scenic spot. Before the car set off, there was 36L of fuel in the fuel tank. After driving at a constant speed for several hours, the remaining fuel in the tank was Q (

Solution: (1) Suppose the linear function relationship before refueling is Q=kt+b(k≠0)?

∵When t=0, Q=36

When t=3, Q=6.

∴The linear function relationship is Q = -10t+36.

(2)?∵ It takes t = = 2.5 (h) to reach the scenic spot.

∴ Substituting t = 2.5 into Q = -10t + 36, we get Q = 11> 0.

∴ To reach the scenic spot, put it in the fuel tank The oil is enough.