A political campaign estimates that the candidates polling percentage y and the amount x (in millions of

Question:

A political campaign estimates that the candidate’s polling percentage y and the amount x (in millions of dollars) that is spent on television advertising are related by

y = 25 + 4ln x

If $12 million has been spent on television advertising, find the rate of spending (in millions of dollars per week) that will increase the polling percentage by 1 percentage point per week.

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