3. rachel is putting up a fence around her pool.
the pool has a diameter of 12 feet. there is a
sidewalk around the pool that extends 3 feet
out from the side of the pool. how many feet
of fencing will she need to go around the
sidewalk? use 3.14 for it.

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8