A student is training for the swim team during July and August one summer. She swims one hour every day, while averaging 800 meters each day. Select the graph that correctly shows the total meters swam during the time of her training program. (2 points) Graph of hours versus meters. Ray starting at point zero comma zero and passing through 62 comma 49,600, Graph of meters versus hours. Line segment between point zero comma zero and 49 comma 62. Graph of meters versus hours. Ray starting at point zero comma zero and passing through 24000 comma 30. Graph of hours versus meters. Line segment between point zero comma zero and 62 comma 49,600.

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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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