Since both is equal to p(a), you can set them as equal to each other:
15 = 2a - 3
18 = 2a
9 = a
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This will help you find what your looking for
Because the board is 6 meters in length and each section is a meter long. Using fractions, one section of the 6 meter board is 1/6. 1 can go into 6, six times. So, you end up with 6 sections that are each 1 meter long.
Answer: The length of the square is 
Step-by-step explanation:
By definition, the area of a Regular polygon can be calculated with the following formula:

Where "s" the length of any side of the polygon and "n" is the number of sides .
According to the information given in the exercise, you know that:

Since an hexagon has six sides, you know that:

Therefore, its area is:

The formula to find the area of a square is:

Where "s" is the length of any side of the square.
Since that regular hexagon has the same area as this square, you can substituting the area calculated above into the formula for calculate the area of a square, and then solve for "s".
Then you get:

Answer:
I am pretty sure it is most likely answer D.
Step-by-step explanation:
Hope this helps! Have a great day and good luck!