F(x) = 2x - 4; g(x) = { f(x)

Step-by-step explanation:

subtract the divied

It takes 2 hours to drive from one city to the next.

Step-by-step explanation:

The length of the straight-line road on the map between two cities is 6 inches.

⇒ Length on map = 6 inches

Now, A road map has a scale of 10 miles per inch.

So, Actual length of the road = 6 × 10

                                                 = 60 miles

Now, Speed = 30 miles/hour

⇒ Distance = Speed × Time

⇒ 60 = 30 × Time

⇒ Time = 2 hours

Hence, It takes 2 hours to drive from one city to the next.