The ratio of boys to girls in math class is 7:8. Which statement must be true about this math class? (A) the boys make up 7/8 of the class.

(B) the girls make up 8/15 of the class.

(C) there are exactly 15 students in the class

(D) there is exactly one more girl in the class.

[ will mark as brainliest for the quickest answer!! ]

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.