Solve the problem.A farmer has 400 yards of fencing to enclose a rectangular garden. Express the area A of the rectangle as a function of the width x of the rectangle. What is the domain of A?
A. A(x) = x2 + 200x; {x|0 < x < 200}
B. A(x) = -x2 + 200x; {x|0 < x < 200}
C. A(x) = -x2 + 400x; {x|0 < x < 400}
D. A(x) = -x2 + 200x; {x|0 < x < 400}
Answer: B
Mathematics
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