Which of the following situations could have a regression line with a negative y -intercept? Select all that apply.

Select all that apply:

-The profit (sales price minus cost) made selling a unit in terms of number of units produced.

-The amount of oil in an oil field as a function of the number of years the oil field has been in production.

-The value of a Fortune- 500 company, founded in the year 1990 , as a function of the number of years since founding.

-The value of a rail locomotive as a function of the number of years since it was put into service.