The answer to this would be 30% due to finding the percent you multiple 20 by 5 and since you did that you have to do it either the other number so it would be 30
Negative rate of change just means the graph is falling. This one is falling everywhere after x=0.5. The only choice in that section of the graph is the last one.
0.6666 (recurring)%
Divide 2 by 3 to get 2/300 into x/100
2 divided by 3 is 2/3's, which is 0.66666 recurring
1. =4/16 which in simplified terms = 1/4
2. = 37/99 (find the lowest common denominator which is 99 then multiply them, then combine fractions then subtract them)
3. 2/25
4. 12/18 which simplified is 2/3
5. 5/15 which simplified = 1/3
Hope you understand that:)