The senior classes at High School A and High School B planned separate trips to the local amusement park. The senior class at High School A rented and filled 14 vans and 11 buses with 634 students. High School B rented and filled 2 vans and 7 buses with 286 students. Each van and each bus carried the same number of students. Find the number of students in each van and in each bus.​

b.my answer is b.

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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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the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm