Chantal started the day with 50 dollars. In the afternoon, her friend returned the 32 dollars he borrowed. She spent 40 dollars at the grocery store that evening.
Which expression can be used to find the amount of money Chantal has at the end of the day?
A 50 -- 32 + 40
B. 50 - 32 - 40
C. 50 - (-32) + 40
D. 50 - (-32) - 40

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.