Molly wants her rectangular rooftop garden plot to have an area of 21 square feet. if she makes the width 5 feet, what must be the length? is this an example of direct variation or inverse variation?

a)105 ft; direct
b)4.2 ft; direct
c)4.2 ft; inverse
d)105 ft; inverse

Option C.

Step-by-step explanation:

Molly wants her rectangular rooftop garden to have the area = 21 feet²

Width of the rectangular garden is = 5 feet

Let the length of the garden = l feet

Since we know the formula of "area of the garden = Length × width"

Length =

This formula represents length of the garden ∝

Length of the garden is inversely proportional to the width of the garden.

(Length increases with the decrease in width)

Now we plug in the values in the formula.

l =

 = 4.2 feet

Option C. is the answer.

answer: a

step-by-step explanation:

i dont know sorry

step-by-step explanation: