Step-by-step explanation:

3/20 is 15% so that's bigger
The
first graph.
The equation is x - 1

3
In order to solve it, you need to get x by itself.
Add 1 to both sides. 3+1=4
x

4
Since this is your sign

the arrow has to point towards the left, and the circle needs to be colored in.
Since there are 120 payment and the total interest paid was
$ 14,644.95. so the average monthly interest can be calculated by:
Average monthly interest = $ 14,644.95 / 120
Average monthly interest = $ 122.04
% total interest = ($ 14,644.95) / $ 39,644.95 x 100
% total interest =36.94 %