Which of the following is a non linear function? A. Edith is a member of a magazine subscription program. She pays $11 for five magazines. B. Ronald has a car that depreciates in value by 11% every year. C. During a storm, a team of researchers calculates the rain is falling at a rate of 1.2 centimeters per hour. D. Sam's weekly pay increases by $50 every year stays at the same job.

The non-linear function among the options given is D. Sam's weekly pay increases by $50 every year he stays at the same job.