Chapter 3: Problem 18
write each equation in its equivalent logarithmic form. $$b^{3}=343$$
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Chapter 3: Problem 18
write each equation in its equivalent logarithmic form. $$b^{3}=343$$
These are the key concepts you need to understand to accurately answer the question.
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Use the exponential decay model for carbon- \(14, A=A_{0} e^{-0.000121 t}\) Skeletons were found at a construction site in San Francisco in \(1989 .\) The skeletons contained \(88 \%\) of the expected amount of carbon-14 found in a living person. In \(1989,\) how old were the skeletons?
Rewrite the equation in terms of base \(e\). Express the answer in terms of a natural logarithm and then round to three decimal places. $$y=100(4.6)^{x}$$
Solve each logarithmic equation. Be sure to reject any value of \(x\) that is not in the domain of the original logarithmic expressions. Give the exact answer. Then, where necessary, use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution. $$2 \log _{3}(x+4)=\log _{3} 9+2$$
Use Newton's Law of Cooling, \(T=C+\left(T_{0}-C\right) e^{k t},\) to solve Exercises \(47-50\). A bottle of juice initially has a temperature of \(70^{\circ} \mathrm{F}\). It is left to cool in a refrigerator that has a temperature of \(45^{\circ} \mathrm{F}\). After 10 minutes, the temperature of the juice is \(55^{\circ} \mathrm{F}\) a. Use Newton's Law of Cooling to find a model for the temperature of the juice, \(T\), after \(t\) minutes. b. What is the temperature of the juice after 15 minutes? c. When will the temperature of the juice be \(50^{\circ} \mathrm{F} ?\)
Would you prefer that your salary be modeled exponentially or logarithmically? Explain your answer.
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