Company A offers a starting salary of $28,000 with a raise of $3,000 each year. Company B offers a starting salary of $36,000 with a raise
of $2,000 per year. Company C offers a starting salary of $18,000.
After how many years would the salaries for Companies A and B be
the same? How much of a raise per year would Company C have to
offer to equal the salaries of Companies A and B in the year in which
the salaries of those two companies are the same?