Kristina recently hired a mechanic to do some necessary work. On the final bill, Kristina was charged a total of $1948. The amount listed for parts was $485 and the rest of the bill was for labor. If the hourly rate for labor was $77, how many hours of labor was needed to complete the job? (A) First write an equation you can use to answer this question. Use x as your variable. The equation is

(B) Solve your equation in part (A) to find the number of labor hours needed to do the job. The number of labor hours was