Answer:
, 
Step-by-step explanation:
The total area of the pool and the walkway is:




The roots of the second-order polynomial is:
and 
The only possible root is:

The other dimension of the pool is:



Answer:
{f(x) | -∞ < f(x) ≤ 4 }
Step-by-step explanation:
The range is made up of the y values. Remember f(x) = y
In this graph the least value of y is -∞ and the greatest value of y is 4
So, the range is {f(x) | -∞ < f(x) ≤ 4 } which is the 2nd choice
Answer:956012
Step-by-step explanation: