Carlos and Devon both accepted new jobs at different companies. Carlos's starting salary is $30,000 and Devon's starting salary is $43,000. They are curious to know who has a better starting salary when compared to the salary distributions of their new employers.

A website that collects salary information from a sample of employees for a number of major employers reports that Carlos's company offers a mean salary of $44,000 with a standard deviation of $8,000. Devon's company offers a mean salary of $54,000 with a standard deviation of $4,000.

Find the z-scores corresponding to each of their starting salaries. Round to two decimal places, if necessary