The function f(x) = –(x – 3)2 + 9 can be used to represent the area of a rectangle with a perimeter of 12 units, as a function of the length of the rectangle, x. What is the maximum area of the rectangle? 3 square units 6 square units 9 square units 12 square units

maximum area is 9 square units

Step-by-step explanation:

area equation is

find the derivative of the area equation and equate to 0

take the derivative and  equate to 0

Use this x value to evaluate the function  

= -(3-3)^2 +9

=0+9

=9 square units (this is the maximum area)

47

step-by-step explanation:

emily solved for a part when she should have solved for the whole. 875,000 should be the numerator of the equivalent ratio. 70 x 12,500 is 875,000. so the answer is 100 x 12,500 which is 1,250,000.