A JanSport backpack that was recently on sale for $60 has been marked up 15%. What is the new retail price of that backpack?
1 answer:
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Answer:
x = -5; y = 4, z = 1
Step-by-step explanation:
Given the row echelon form as:
This matrix can be represented as:
Therefore:
z = 1
y - z = 3;
y = 3 + z = 3 + 1 = 4.
Hence, y = 4
x + 4z = - 1;
x = -1 - 4z = -1 - 4(1) = -5
x = -5
