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algebra

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Ticket Prices Two hundred tickets were sold for a
baseball game, which amounted to $840. Student
tickets cost $3, and adult tickets cost $5.
(a) Let x be the number of student tickets sold and y
be the number of adult tickets sold. Write a system
of linear equations whose solution gives the
number of each type of ticket sold.
(b) Use the method of substitution to solve the system.

  • algebra -

    x + y = 200
    3 x + 5 y = 840
    so
    y = (200-x)
    substitute (200-x) for y
    3 x + 5 (200-x) = 840

    3 x + 1000 - 5 x = 840

    2 x = 160
    x = 80
    y = 120

  • algebra -

    Can you explain how to factor the following trinomials forms: x2 + bx + c and ax2 + bx + c. Can there be more than one way to factor a problem like this? can you please show it in written word and step by step?

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