The greatest common factor is 3.
1. The combined volume of all the tanks at the aquarium is written in Scientific notation. Keeping this on mind, you can write it as following:

2. Now, you must sum the combined volume of all the tanks and the volume of the new tank to calculate the total volume of all of them:
3. Now, you can write the result in Scientific notation, as following:

The answer is: 
The slope of the line is 2/3, so the angle is arctan(2/3) ≈ 33.69°.
Answer: b
Step-by-step explanation:
Answer:
I believe it's 1.
Step-by-step explanation: