Question

Patricia wishes to have a rectangular-shaped garden in her backyard. she has 82 ft of fencing material with which to enclose her garden. letting x denote the width of the garden, find a function f in the variable x giving the area of the garden. what is its domain?

Answer 1

width=x

perimeter=80

or 2(x+l)=80

so l=length=40-x

so the area=x(40-x)

the area can never be 0

x(40-x)>0

this gives the domain as 0

Explanation: