So firstly, square root 9a^2 and 49: 
Next, combine like terms, and your answer will be 
, or the third option.
W=-9
Explanation: 3w=-27
Divide 3 from -27
-27 divided by 3 = -9
If this problem is expecting you to show a graph photo, then a dependable website for a problem like this would be www.desmos.com. message me if you're not sure how to use it.
This makes no sense in sorry.
One person throws away 4.5 x 10² g/day.
In 2013, there were 3.2 x 10⁶ people, so they threw away
(4.5 x 10² g/day)*(3.2 x 10⁶) = 1.44 x 10⁹ g/day.
Assume that there were 365 days in 2013.
The total trash thrown away was
(1.44 x 10⁹ g/day)*(365 days) = 5.26 x 10¹¹ g
Answer: 5.3 x 10¹¹ g
