By definition the area of a rectangle is: A = w * l The perimeter is: P = 2w + 2l Where, w: width l: long Substituting values: 300 = w * l 80 = 2w + 2l Solving the system of equations we have: l = 30 m w = 10 m Answer: The length and width of the field are: l = 30 m w = 10 m
The domain of any graph depends on the vertex as well as the asymptotes. You can easily tell if the domain is all real numbers by looking at the graph and seeing that it goes clearly from -infinity to +infinity. If there is an asymptote that blocks it, then it will not be all real numbers.
