Little help please?

Solve the combined inequality. A car gets 25 miles per gallon in the city and 35 miles per gallon on the highway. What range of miles can the car travel on 4 gallons of gas?

1. How many miles will the car travel in the city. (1 point)
   
   
2. How many miles will the car travel on the highway? (1 point)
   
   
3. Write the range of the 2 values in interval notation form. ( 2 points)