Answer:
<h2>slope = 0</h2>
<h2>MARK ME AS A BRAINLIST AND FOLLOW ME </h2>
Answer:
The percentage maybe went up because of air pollution, and global warming
Step-by-step explanation:
Since they are vertical angles, they equal each other. Therefor the equation would be: 30x-29 = 20x+21
10x = 50
X = 5
After, you plug whatever x is back into the other equations.
20(5)+21 = 121 and 30(5)-29 = 121
If the last day is y. and then the answer will be y=120-x