How do you know if a graph, table, or mapping diagram is a function?

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?

What are two numbers that add up to -9 and multiply to -10 best answer gets branliest and 100 extra points

Which statement is true about the discontinuities of the function f(x) = x-5/ 3x^2-17x-28