I believe the exact answer is 3.91
Answer:
The answer is the option A
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Step-by-step explanation:
Let
x-------> the width of the border
we know that
The total area of the window plus the border is equal to


Using a graphing tool -----> to resolve the quadratic equation
see the attached figure
The solution is
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Answer:
175+13a-10b+2c
Step-by-step explanation: