A cell phone plan costs ​$30.70 per month for 400 minutes of talk time. It costs an additional ​$0.06 per minute for each minute over 400 minutes. To get​ e-mail access, it costs ​%30 of the price for 400 minutes of talk time. Your​ bill, which includes​ e-mail, is the same each month for 9 months. The total cost for all 9 months is ​$402.39. Write and solve an equation to find the number of minutes of talk time you use each month. Let m represent the number of minutes over minutes each month. Which equation represents the given​ situation?

Look at this system of equations. -3x + 3y = 12 y = x + 4 the solution set of this system is best explained by which of these statements? a) the graphs of the equations are the same line because the equations have the same slope and the same y-intercept. the system has infinitely many solutions. b) the graphs of the equations are parallel lines because they have the same slope but different y-intercepts. the system has no solution. c) the graphs of the equations are lines that intersect at one point because the equations have the same slope but different y-intercepts. the system has exactly one solution. d) the graphs of the equations are lines that intersect at one point because the equations have the same slope and the same y-intercept. the system has exactly one solution.