Nick o’ time, the plumber, charges $30 per hour. his brother ivan, the plumber’s , charges $20 per hour. nick starts working on a job. four hours later ivan joins him and both work until the job is finished. if they make a total of $470, how long did they work together?

Determine whether the points (–3,–6) and (2,–8) are in the solution set of the system of inequalities below. x ? –3 y < 5? 3x + 2 a. the point (–3,–6) is not in the solution set, and the point (2,–8) is in the solution set. b. neither of the points is in the solution set. c. the point (–3,–6) is in the solution set, and the point (2,–8) is not in the solution set. d. both points are in the solution set.

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.

This graph shows which inequality? a ≤ –3 a > –3 a ≥ –3 a < –3