The answer is A, developed nations make up about 20 percent of population yet consume 75 percent of sources.
X = the number of months the tire was used
y = the thickness of the tire tread
y = -(3/7)x + 20
Substitute x for 20 (the number of months the tire was used) and solve for y.
The next question: Substitute x for 49 (the number of months the tire was used) and solve for y.
D.........................................
Answer:
12 purple rocks
24 blue rocks
Step-by-step explanation:
<u>2/3 blue</u>
<u>1/3 purple</u>
36/3 = 12
