Three fourths of a number decreased by nine is at least forty two

Which equation represents the function on the graph?

Question 13 (1 point) jerome is starting a new job. his contract states he will earn $42,000 the first year, and will get a 4% raise per year. which function s(x) represents jerome's salary after a certain number of years, x?

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.