Question

A farmer has 100 m of fencing to enclose a rectangular pen. Which quadratic equation gives the area (A) of the pen, given its width (w)?

1. A(w) = w2 – 50w
2. A(w) = w2 – 100w
3. A(w) = 50w – w2
4. A(w) = 100w – w2

Answer 1

A(w) = 50w – w2

Answer 2

The answer is 3. A(W)=50w-w2