Multiple Choice Question (MCQ)

b=2.35+0.25x

c=1.75+0.40x

In the equations above, b and c represent the price per pound, in dollars, of beef and chicken, respectively, x weeks after July 1 during last summer. What was the price per pound of beef when it was equal to the price per pound of chicken


  1. ×

    $2.60

  2. ×

    $2.85

  3. ×

    $2.95

  4. $3.35

Collected in the board: Algebraic equation

Steven Zheng posted 1 week ago


Answer

  1. When the price per pound of beef was equal to the price per pound of chicken,

    b =c

    The following equation is established

    2.35+0.25x = 1.75+0.40x

    0.6 = 0.15x

    x = 4

    which means it took 4 months for the price of beef was equal to the price of chicken after July 1 during last summer.

    Plug in x in the first equation

    b=2.35+0.25\times x

    =3.35

    D is correct choice

Steven Zheng posted 1 week ago

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