Supermart is a retailer and has locations across the country. Salaries of sales associates varies across the country. Salary expenses can

be predicted using a linear regression model. Which variables can be used in the linear regression model to increase the reliability of

the results?

$$ Total revenue, interest expense, and minimum wage laws in each state

O Total revenue, state taxes, and minimum wage laws in each state

$$ Total revenue, total number of retail locations, and minimum wage laws in each state

$$ Net income, cost of good sold, and total operating expense