For questions 1-2 identify the zeros of the function

Step-by-step explanation:

The zeros of a function are where it crosses the x axis, so just find the coordinates for the x intercepts.

1.

and

2.

and

625 sq. m.

Step-by-step explanation:

The graden's area is given as :  

For maximization of area,we need to put first order derivative of given equation equals to 0 i.e. a'(w) should be equal to zero.  

On Simplifying :

w = 25 meters

Since we are given that Shenelle has 100 meters of fencing to build a rectangular garden

This means perimeter is equal to 100.

Formula of perimeter of rectangle :

Where l is length

w is width

Plugging w as 25

Dividing 2 in both sides

So, for the maximum area the length should be 25 m and width should 25 m

So, So, maximum area

Hence the maximum possible area is 625 sq. m.