Question

Sara wants to see if a new brand of hair dye lasts longer than the brand she currently uses. She puts the new hair dye on the left side of her head and the old brand on her right side. After 2 weeks she observes which side of her head has more gray hair showing through.

a. Independent Variable =
b. Dependent Variable =
c. Constant =

Answer 1

a: the hair dye

b: the change in color of her hair

c: the same amount of hair for both dyes and the same amount of dye

Step-by-step explanation: