Answer:
let's take
y=0
when y=0,
y=x-1
therefore,
0=x-1
when we cross -1 the other side it becomes a positive. so when y=0, x=1.
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Question
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16x² + 14x - 15
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Factorise
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16x² + 14x - 15 = <span>(2x + 3)(8x - 5)
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Divide
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Answer : 8x - 5--------------------------------------------
If you divide you get 99.5
Let n be number of days and C the total cost;
Charges by Day and Night kernel,
C=15+20n
Charges by Home away from Home;
C=5 + 30n
The system of equations then is;
C=15+20n
C=5+ 30n