Question

Marilee is creating a garden in her yard. She needs to put up a fence to keep the animals out of it. She has 40 yards of fencing she can erect. This situation is modeled using the equation A=−w2+20w
, where A
is the area of the fence and w is the width of the fence. If you were to set up a table to determine the measurements of the width and its corresponding area, what would be a reasonable scale for the domain?(1 point)
Responses

2
2

10
10

1
1

5

Answer 1

1

Reason: From 2w + 2L = 40 we get L = 20 − w, so 0 ≤ w ≤ 20. Using 1-yard increments (0, 1, 2, …, 20) is a reasonable scale to make a table of width vs. area.