Question

The function A = 12x - x2, where x is width in meters, gives the area A of a pond in square meters. Graph the function and use the graph to determine the width that gives the greatest area.
a.

6 m

c.

8 m
b.

7.5 m

d.

10.5 m

Answer 1

A=0,where 12x-x^2=0
x(12-x)=0
either x=0, or x=12