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Mathematics, 18.08.2021 06:10 swelch2010
1. Mr. Ramirez owns a video store and uses a matrix to keep track of the videos sold. The genres are
Comedy (C), Science Fiction (SF), Action (A), Romance (R), and Television Series (TV). They are available
in two formats, DVD or Blue Ray.
C с
SF
A
R
TV
A = DVD
Blue Ray
[2 49
51
82
30
56
227
18]
L71
a. Describe what each row and column represents in terms of the problem situation.
b. What are the dimensions of this matrix?
c. Determine the number that is in each location. Describe the meaning of the matrix element in
terms of the problem situation.
1. The element a 24
2. The element 02
3. The element a 21
d. What matrix element represents the number of Action movies on Blue Ray? Write your answer in
matrix notation.
e. Mr. Ramirez also keeps track of revenue. He charges $15 for each DVD and $20 for each Blue Ray.
Determine the revenue generated by each genre.
f. Determine the revenue generated by each video format.
g. Determine the total revenue generated by video sales.
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