Two rooms were used to exhibit paintings. The number of paintings in room A was 7/9 of the number of paintings in room B. When 1/3 of the paintings in room B were moved to room A, there were 8 more paintings in room A than in room B. Find the number of paintings in Room a and Room B at first

y=3n + 1

step-by-step explanation:

this is wrong because it says the second number is one less and i added one instead

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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