I need some help on these questions thanks

Jordan rides his bike 6 7/15 miles every day to deliver newspapers and to go to and from school. if his ride to and from school is 4 3/10 miles, how many miles is the trip to deliver newspapers? 1 1/3 1 1/6 2 1/6 2 4/5

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

How do you solving the solution of each system using elimination?