# Math Help - Maths advice- equations

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.

2. Originally Posted by bubs
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.

Let $T_n$ be the number of tubs at the end of the $n$ th day, then:

$T_{n+1}=3T_n-50$

CB

3. ## 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