Answer:


Step-by-step explanation:
To simplify the square roots, break the number under the square root into factors. Any factors which are perfect squares may be simplified to outside the square root.

and
The independent variable is the variable that is being changed. In this statement, it would be water flowing flowing in the pool. The dependent variable is what is being changed so that would be the depth of the water.
There, I hope this helps! :)
307,407 rounded to the nearest thousand is 307,000.... because it is closer to 307,000 then it is to 308,000
B. -3 and 5
constants are the numbers without variables (the letters) and coefficients are the numbers with variables