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

Question

Adan Jarvis

Mathematics

29 August, 17:51

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

+3

Answers (1)

Know the Answer?

Arielle Clayton · Answer 1

Area = length x width

21 = length x 5

length = 21/5 = 4.2

The length is inversely proportional to the width because as the length increases the width reduces and vice-versa

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; directB) 4.2 ft; directC) 4.2 ft; inverseD) 105 ft; inverse

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