The answer will be 40. As it doubles twice during 220mins- 10 to 20 and then 20 to 40.
Answer:

The maximum width must be 
Step-by-step explanation:
Let
L ----> the length of the rectangular pool
W ---> The width of the rectangular pool
we know that

so
----> inequality A
we have

substitute the value of L in the inequality A

simplify



The maximum width must be 
X^2+2x is the expression that represents the area.
Answer:
B) 6(3x + 5y)
Step-by-step explanation:
6 times 3 is 18 and 6 times 5 is 30
Answer:
x = 1 or x = -3
Step-by-step explanation:
+ bx + c = 0
x = 
as
+ 2x - 1 = 2 ⇔
+ 2x - 3 = 0, its solution is
x = 
=
=
= 
therefore, x = 1 or x = -3
hope this helps! :D
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