A company produces fruity drinks that contain a percentage of real fruit juice. Drink a contains 10% real fruit juice and drink b contains 30% real fruit juice. Company made 360 L of fruity drinks with 78 L of real fruit juice. Write a system of equations that could be used to determine the number of liters of drink a made and the number of liters of drink b made. define the variables that you used to write the system

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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