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Math Help - Maths advice- equations

  1. #1
    Newbie
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    Maths advice- equations

    Hi. can someone please get me started on answering this question.
    Elizabeth started with 30 tubs of yeast. At the end of each day, she used a small quantity of yeast to make two additional tubs of yeast, from each tub of yeast that she had. She then sold 50 tubs of yeast.This routine was repeated each day.

    A: give the difference equation for generating the number of tubs of yeast at the start of each day.

    B: list the number of tubs for the first four days.

    C: find the number of tubs of yeast needed at the very start of this procedure so that the number of tubs at the start of each day remained constant.

    Thanks in advance
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by bubs View Post
    Hi. can someone please get me started on answering this question.
    Elizabeth started with 30 tubs of yeast. At the end of each day, she used a small quantity of yeast to make two additional tubs of yeast, from each tub of yeast that she had. She then sold 50 tubs of yeast.This routine was repeated each day.

    A: give the difference equation for generating the number of tubs of yeast at the start of each day.

    B: list the number of tubs for the first four days.

    C: find the number of tubs of yeast needed at the very start of this procedure so that the number of tubs at the start of each day remained constant.

    Thanks in advance
    Let T_n be the number of tubs at the end of the n th day, then:

    T_{n+1}=3T_n-50

    CB
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  3. #3
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    Smile Maths help

    CB.

    Thanks so much for your help. Appreciate it. I had spinal surgery 5 weeks ago and missed out on so much school work. Having a hard time trying to catch up on things.

    Thanks again
    Margie
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