What sentence represents the number of points in the problem below? A test is worth 50 points. Multiple-choice questions are worth 7 point, and
short-answer questions are worth 3 points. If the test has 20 questions, how
many multiple-choice questions are there?
A. The number of multiple-choice question points minus the number
of short-answer question points is 20.
B. The number of multiple-choice question points times the number
of short-answer question points is 50.
O C. The number of multiple-choice question points plus the number of
short-answer question points is 20.
O D. The number of multiple-choice question points plus the number of
short-answer question points is 50.

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.