69/12-3 10/12= what because i dont know can yall

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?

Express -5 2/5 as an improper fraction.

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?