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Multiple Choice: Basic Math Logic?

Tara is deciding between 2 long distance companies. The first company charges $7.95 each month and $0.07 per minute. The second company charges a flat rate of $39.95 each month for unlimited long distance calls. How many minutes of long distance would she need to use each month for the two plans to cost the same amount?

a) 350

b) 402

c) 457

d) 509

____

Please show work AND explain.

THANK YOU AND GOD BLESS!!!

20 Answers

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  • 1 decade ago
    Favorite Answer

    close ur eyes and pick an answer

  • 1 decade ago

    the answer is C.

    7.95 + .07x = 39.95

    the x represents the minutes.

    i set the equation equal to 39.95 beaceu no matter how much you talk for plan 2, it would always cost that much no matter WHAT.

    but for plan one, the way they charge you is by finding out how many minutes you talked [x] and then multiplying that by .07 because that is how much they charge per minute.

    therefore, i need a way for the first bill to equil the fixed rate of the second companies bill...and that is by talking for 402 minutes [when you solve the equation]

  • 1 decade ago

    The answer is C.

    The formula is as follows:

    x = # of minutes

    7.95 + .07x = 39.95

    -7.95 =-7.95

    .07x =32

    divide by .07= divide by .07

    x = 457.14286...

    or x=457

    You can also check it - 457 minutes at 7cents a minutes is 457x.07 which equals 31.99. Add the flat rate of 7.95 and you get 39.94.

    This is an easy one!!! Do your math!!!!

  • Anonymous
    1 decade ago

    i just did guess and check... the answer is C -

    $.07 multiplied by 457 = 31.99

    31.99 + 7.95=39.94

    its not exactly 39.95, but its the closest one

  • How do you think about the answers? You can sign in to vote the answer.
  • 1 decade ago

    C would be your closest

    7.95 + (.07 x 457) = 39.94

    .07 x 457 = 31.99

  • 1 decade ago

    The answer is C.

    You've probably already learned about equations and how to solve them.

    Just make an equation:

    7.95+0.07m=39.95

    m stands for minutes

    then solve the equation.

    0.07m=32

    m=about 457

    Hope I helped!

  • Anonymous
    1 decade ago

    to solve this you need an equation:

    7.95+.07x=39.95

    Subtract 7.95 from both sides:

    7.95+.07x=39.95

    -7.95 -7.95

    You get:

    .07x=32

    divide .07 to both sides

    .07x=32

    /.07 /.07

    you will get approximatly

    457

    So the answer is C

    Source(s): Algebra
  • Anonymous
    1 decade ago

    C..

    39.95-7.95=32

    32/.07= 457.143

    good luck!! :) god bless :p

  • 1 decade ago

    .07x + 7.95 = 39.95

    .07x = 32

    x = 457

  • 1 decade ago

    Oh no algebra 1 again I thought i got rid of you after 3 years of that class lol

  • 1 decade ago

    7.95+0.07x=39.95

    -7.95 -7.95

    0.07x=32.00

    something like that, about 350.

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