You can calculate the difference/vector of both points:

then calculate the magnitude/length like pythagoras
Answer:
22%
Step-by-step explanation:
x/100 * 160=35
160x=3500
21.875
hence to the nearest percent: 22%
9 because the square root of 81 is 9
1. X(0,0) --> X'(3,-5).
To go from (0,0) to (3,-5), you must go to the right 3 and down 5.
I cannot answer 2 or 3, as rotations are not my strong suit.

Step-by-step explanation:

Take
as common. Then,
