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Answer:

The balance is $256
Step-by-step explanation:
Given


Required
Determine the balance after 20 visits
Represent the balance with b
Represent the visitation with v
The relationship between the given parameters is:

This gives:


Make b the subject

To get the actual balance after 20 visitation;
Substitute 20 for v



Hence:
<em>The balance is $256</em>
Answer: B. 9/25
Work Shown:
x% = x/100
36% = 36/100
36% = (9*4)/(25*4)
36% = 9/25
Using your calculator, you should find that 9/25 = 0.36 which converts to 36%, so that helps confirm the answer.
Answer:
rational function
Step-by-step explanation:
That would be a "rational function;" it's the "ratio" of two polynomial functions, with the understanding that the denominator may not be zero.