An elevator travels down from the top floor of a skyscraper. Its height, in feet, is given by the equation h = 1000 1000 - 22t, where h represents the elevator's height, in feet, and t represents the time, in seconds. What could the number 22 represent in the equation? The change in the elevator's height for every one additional second. How long it takes for the elevator to reach the ground floor. The elevator's final height. The elevator's height after one second. Submit Answer​

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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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