Answer:
A. 7 in.
Explanation:
We have been given that the perimeter of a rectangle is 16 inches. The equation that represents the perimeter of the rectangle is , where l represents the length of the rectangle and w represents the width of the rectangle.
We know that perimeter of rectangle is 2 times the sum of width and length of rectangle.
![\text{Perimeter}=2(l+w)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/pbqn00bf0nccgcee6ll5z9euvsqa8l7ixf.png)
![\text{16 in}=2(l+w)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/o7xpc0zhk15x15z3bhta3s2xpwibhv1rou.png)
![\frac{\text{16 in}}{2}=(2(l+w))/(2)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/jl1h0v3desemoohuhamw2ek0ybkwtso5gx.png)
![\text{8 in}=l+w](https://img.qammunity.org/2020/formulas/mathematics/middle-school/4b1vo5ewd0mv6x919g8y2xf0fsufceewrm.png)
To be a rectangle length cannot be 8 as length and width of the rectangle is 8 inches.
Therefore, 7 inches the possible value for the length of the rectangle.