Question 1154157
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            I will solve the second problem  ONLY.



<pre>
The formula for this wording description is


      {{{a[final]}}} = {{{(2*a+1)/(a-1)}}},


where " a " is the starting number.


To get {{{a[final]}}} = 4, you need to solve this equation


    {{{(2*a+1)/(a-1)}}} = 4


for " a ".


Your first step is to multiply both sides by (a-1), then simplify.


<U>ANSWER</U>.  a = 2.5.
</pre>

Solved.



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