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A photocopy store charges Rs. 1.50 per c...

A photocopy store charges Rs. 1.50 per copy for the first 10 copies and Rs. 1.00 per copy after the 10th copy. Let x be the number of copies, and let y be the total cost of photocopying.
Find the cost of making 40 copies

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The correct Answer is:
Rs. 45
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SURA PUBLICATION-TWO DIMENSIONAL ANALYTICAL GEOMETRY-EXERCISE 6.3
  1. If (-4,7) is one vertex of a rhombus and if the equation of one diagon...

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  2. Find the equation of the lines passing through the point of intersecti...

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  3. Find the equation of the lines passing through the point of intersecti...

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  4. Find the equation of the lines passing through the point of intersecti...

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  5. Find the equations of two straight lines which are parallel to the lin...

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  6. Find the equations of straight lines which are perpendicular to the li...

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  7. Find the equation of a straight line parallel to 2x+3y=10 and which is...

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  8. Find the length of the perpendicular and the co-ordinates of the foot ...

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  9. If p(1) " and " p(2) are the lengths of the perpendiculars from the or...

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  10. Find the distance between the parallel lines 12x+5y=7 and 12x+5y+7=0

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  11. Find the distance between the parallel lines 3x-4y+5=0 and 6x-8y-15=...

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  12. Find the family of straight lines (i) Perpendicular (ii) Parallel to 3...

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  13. If the line joining two points A(2,0) and B(3,1) is rotated about A in...

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  14. A ray of light coming from the point (1,2) is reflected at a point A o...

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  15. A line is drawn perpendicular to 5x=y+7. Find the equation of the line...

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  16. Find the of the image of the point (-2,3) about the line x+2y-9=0.

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  17. A photocopy store charges Rs. 1.50 per copy for the first 10 copies an...

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  18. A photocopy store charges Rs. 1.50 per copy for the first 10 copies an...

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  19. Find atleast two equations of the straight lines in the family of the ...

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  20. Find all the equations of the straight lines in the family of the line...

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