A certain element decays at a constant rate of \( 6 \% \) per year. If you start with \( 20 \) grams of the element, how long will it take before there are only four grams left?
Pregunta
Answer
t = 26.82 years
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Q:
Find the inverse for each of the following functions.
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Q:
The total revenue from the sale of a popular book is approximated by the rational function \( R ( x ) = \frac { 1700 x ^ { 2 } } { x ^ { 2 } + 4 } \) , where \( x \) is the number of years since publication and \( R ( x ) \)
is the total revenue in millions of dollars.
(a) Find the total revenue at the end of the first year.
(b) Find the total revenue at the end of the second year.