A cafeteria worker places a scoop of mashed potatoes on every tray. After 80 people had gone through the lunch line, there were 920 ounces of mashed potatoes remaining. After 120 people had gone through the lunch line, there were 800 ounces of mashed
potatoes remaining.
If p represents the number of people going through the lunch line and w represents the ounces of mashed potatoes remaining,
which equation can be used to model this situation?
OA. w=-1/3p+ 680
ОВ. w = 3p + 1,160
OC. w=-3p+1,160
OD. w=1/3-680

c hope that helps <3

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answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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