inequality expresion

The cost of a long distant telephone call is $0.36 for first minutes and $0.21 each additional minutes or portion thereof. Write an inequality representing the number of minutes a person could talk with out exceeding $3.00

would this be written as
0.36+0.21(x-1)<$3.00

0.36+(0.21(x)+0.21(-1))<3.00
0.36+(0.21x-0.21)<3.00
0.21x+0.15<3.00
0.21x<-0.15+3.00
0.21x<2.85
0.21x/0.21<2.85/0.21
x<2.85/0.21
x<2.85/0.21
x<13.57

to check i did this
0.36+0.21(13.57-1)<3.00
0.36+0.21(12.57)<3.00
0.36+2.639<3.00
0.36+2.64<3.00
3.00=3.00

aim i correct on this if i am not please tell me where i need look at to fix this







Your math is correct but the answer has to be 13 minutes, since the extra 0.57 minutes, or even 0.01 minute, would be billed as a full minute, making the bill 3.01

  1. 👍 0
  2. 👎 0
  3. 👁 163
asked by linda

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    The cost of a telephone call is $0.75 + $0.25 times the number of minutes. Write an algebraic expression that models the cost of a telephone call that lasts t minutes. i got C= 0.75 + 0.25t am i correct? pls help if im not :( and

    asked by lisa on October 1, 2013
  2. Math

    The cost of a telephone call is $0.75 + $0.25 ties the number of minutes. Write an algebraic expression that models the cost of a telephone call that lasts t minutes.

    asked by Kayle on August 13, 2014
  3. algebra

    The cost of a telephone call is $0.75 + $0.25 times the number of minutes. Write an algebraic expression that models the cost of a telephone call that lasts t minutes.

    asked by shy gurl on August 18, 2014
  4. algebra 1

    The cost of a telephone call is 0.75 plus 0.25 times the number of minutes write an algebraic expression that models the cost of a telephone call that lasts t minute. i got y=25

    asked by ceil phantomhive on August 8, 2019
  5. algebra 1

    The cost of a telephone call is $0.75+$0.25 times the number of minutes. Write an algebraic expression that models the cost of a telephone call that last t mminutes. $0.75 + 0.25 * t

    asked by 9th grader on August 22, 2016
  6. Algebra

    A long-distance telephone call cost $.20 for the first 10 minutes plus $.10 for each additional minute. How much should you expect to pay for a call that was 26,457 seconds?

    asked by Muffie on September 26, 2016
  7. algebra

    When making a telephone call using a callingā€‹ card, a call lasting 44 minutes cost ā€‹$1.151.15. A call lasting 1313 minutes cost ā€‹$2.952.95. Let y be the cost of making a call lasting x minutes using a calling card. Write a

    asked by Emma on August 10, 2019
  8. Algebra

    How do you represent each answer as an algebraic expression using the variable mentioned? The charges for a telephone call are $0.45 for the first 3 minutes and $0.09 for each additional minute or part of a minute. Represent the

    asked by Austin on September 28, 2009
  9. math

    Telephone company A charges $3.00 for the first minute of any long distance call and $0.50 for each additional minute. Telephone company B charges $2.00 for the first minute of any long distance call and $0.70 for each additional

    asked by Vicky on May 8, 2014
  10. algebra

    The cost for a long-distance telephone call is $0.36 for the first minute and $0.21 for each additional minute or portion thereof. Write an inequality representing the number of minutes a person could talk without exceeding $3.

    asked by stumped on April 24, 2007

More Similar Questions