What is the following number in the series?

-0.2 | -0.4 | 0.6 | 1.8 | 2.8 | 11.2 | 12.2 | ?

Which of these choices show a pair of equivalent expressions?

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

What is the base of 1/9 to the power of 2