To graph this problem you have to place a point on 20 and go down 5 and go over 2 to the right and do the opposite, (5 up over 2 on the left) and then you just connect the dots.
Answer:
(-2,1)
Step-by-step explanation:
that is where the two graphs intersect
The anwser is......................................... 2.5%
18 and 21 can both be divided by 3