The answer is:
6.2, 4.6, and 1.3 because you are going from greatest to least greatest..
Hope this helps :)

1) Let's simplify those expressions making use of exponents rules:

Note that the exponent outside the parenthesis is 'distributed' over each term inside.
2) Similarly for the second expression we can state that:
1.8k kilometers is needed to make 3 boxes
Because you have your X value which would be 2 in (2,3) and 3 in (3,2) and your y value which is 3 in (2,3) and 2 in (3,2) so what you would have to do in order to graph 2,3 you would go over right 2 and up 3. but in 3,2 you would go over 3 and up two.
Hope this helped