100% X
Jon and Amy are making origami swans. Jon made 6 origami swans before Amy started. After Amy started, they made 10 swans per hour
together.
Which graph represents the number of swans Jon and Amy made based upon the number of hours they have been working together?
y
60
50
A.
Number of Swans
60-
50
40-
30-
20+
10-
OB.
Number of Swans
30
20-
10
0
0
Number of Hours
Number of Hours
60
50
Oc.
Number of Swans
Number of Swans
10-
0
Number of Hours
Number of Hours

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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