Amelia wants to paint three walls in her family room. two walls are 26 feet long by 9 feet wide. the other wall is 18 feet long by 9 feet wide. a. what is the total area of these walls amelia wants to paint? b. each gallon of paint covers about 250 square feet. how many gallons of paint should amelia buy to paint the walls?

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.

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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