what is a function rule for the area of a rectangle whose length is 4in more than its width
a(w) = w(w+4)
To find the function rule for the area of a rectangle, you need to express the area in terms of the rectangle's dimensions. In this case, the length is 4 inches more than the width.
Let's assume that the width of the rectangle is represented by the variable "w" (in inches). Since the length is 4 inches more than the width, we can express it as "w + 4" (in inches).
The formula for the area of a rectangle is given by multiplying the length by the width. Therefore, the function rule for the area (A) of this rectangle can be written as:
A = w × (w + 4)
Simplifying the expression, we obtain:
A = w² + 4w
Thus, the function rule for the area of a rectangle whose length is 4 more than its width is A = w² + 4w.