Mya is a performance athlete. She wants to use a function to represent the number of calories that she burns while training, where represents the total calories burned and x represents her training time in minutes. Mya estimates that the exponential function y= 43.2e^0.0543x is the best fit for the data. Given the following table, what is the actual number of calories that Mya burned when she trained for 30 minutes? Round your answer to the nearest whole number.

option: d is correct

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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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