SOLUTION: Notebooks may be bought in bulk. If you can avail the first 10 notebooks at Php 15 each, and every piece of notebook thereafter costs Php 20, make a linear equation for this. Sketc

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Question 1198025: Notebooks may be bought in bulk. If you can avail the first 10 notebooks at Php 15 each, and every piece of notebook thereafter costs Php 20, make a linear equation for this. Sketch the graph of the linear equation.
Found 2 solutions by ewatrrr, ikleyn:
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
first 10 notebooks at Php 15 each, and every piece of notebook thereafter costs Php 20
C = 20(x-10) + 150
C = 20x -200 + 150
C = 20x - 50
Answer by ikleyn(52781)   (Show Source): You can put this solution on YOUR website!
.
Notebooks may be bought in bulk. If you can avail the first 10 notebooks at Php 15 each,
and every piece of notebook thereafter costs Php 20, make a linear equation for this.
Sketch the graph of the linear equation.
~~~~~~~~~~~~~~~~~


For the further generations of students, who will read this post: 

    There is no any equation relevant to this problem - there is only function,
    relevant to it.

    The relevant function is not linear: it is piece-wise linear function,
    so you better ignore this post since it is worded incorrectly.



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